Poison is the Poison Mist's signature effect. To most players this wouldn't even be considered a condition per se, but in the game files they are one. Poison damage increases with a match's phase, dealing more damage as the match progresses. The name of this condition in the files is "PoizonMist", get used to seeing typos in the variable names.

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Burn is the signature DoT status effect of fire-based skills. It envelops players with an orange outline, and deals True DMG with duration and damage defined by each skill. This effect does not go away when touching water, but it can be countered with the special tune Resist Heat, though this is useless, as getting rid of this effect is the least of your concerns due to its terribly low DMG. Burn's name in the files is "Burn".

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Freeze is a state effect inflicted by dealing 100 Freezepower to the enemy. Freezepower is a hidden stat ice moves have that determines how much freeze they apply to the character. Characters that become frozen are unable to move for a very short amount of time, and can be attacked while in this state. Frozen characters will have a layer of ice covering their body temporarily. Some abilities don't apply 100 Freezepower, meaning you need to land them multiple times to freeze, such is the case of Strike Shoto's beta, melee 2, and Armored All Might's ice bullet. This state can be blocked by the Resist Freeze special tune, though due to only providing benefit over freeze skills it's never really used.
Freeze's name in the files is "Freeze".

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Decay is one of Tomura Shigaraki's signature conditions. Affected players will see their Defense reduced temporarily by the value dictated by the source (10% for Embrittlement, 20% for Collapse Hand). This condition can be visually identified by how the affected character has a glitchy purple overlay texture.

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Blue Burn is Dabi's signature DoT status effect. It envelops players with a blue outline, and deals True DMG with duration and damage defined by each skill. This effect does not go away when touching water, but it can be countered with the special tune Resist Heat, though this is useless, as getting rid of this effect is the least of your concerns due to its terribly low DMG.

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Shock is a state effect inflicted by dealing 100 Shockpower to the enemy. Shockpower is a hidden stat Denki Kaminari's moves have that determines how much freeze they apply to the character. Characters that become shocked are stunned for a relatively short amount of time, and can be attacked while in this state. Shocked characters will have subtle electric particles around them, and will often do funny noises. Some abilities don't apply 100 Shockpower, meaning you need to land them multiple times to shock, such is the case of both Kaminari's alpha skills. This status can be blocked by the special tune Resist Shock, but it's usually considered useless as it's only useful against Denki Kaminari's skills, so it's use is mostly reserved to blocking the special tune "Electrification", but even then any other tune will be more useful.
Shock's name in the files is "Tunder", which is supposed to say Thunder but the code is full of typos like this...

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Erasure is Shota Aizawa's signature condition, which seals the use of the affected character's main 3 abilities (Alpha, Beta and Gamma). The name of this condition in the files is "UniqueSeal".

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Unknown as to where exactly this is used, but judging by the name, this should decrease the player's health, likely instantaneously.

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Unknown as to where exactly this is used, but judging by the name, this should recover the player's health, likely instantaneously. Might be what recovery items use.

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Unknown as to where exactly this is used, but judging by the name, this should recover the player's health continuously. Might be related to Support Ability Cards, which have their dedicated condition further below, but this might be added on top. Support Nejire has a variation of this condition on her beta skill.

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Unknown as to where exactly this is used, but it likely is related to Support Ability Cards, specifically the area that heals allies around, as the name says Influence (the healing area) of ally (it's for allies) of ability heal (the word "ability" is only used to refer to Ability Cards, as quirk abilities are called "skills").

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The condition that refers to the DOWN state, in which your movement is highly impaired, you're unable to use items or abilities (except for Dabi's Special Action), and rely on DOWN HP to support your existence.

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Transform is one of Himiko Toga's signature conditions. Transform allows the user to play as a different character in the battlefield, mimicking the levels of whoever you turn into and losing the ability to collect blood. This condition can be visually identified by the ability of seeing a teammate with their classic white outline, but with an arrow on top of their head instead of their name (don't mistake them by your allies though) Internally, this condition is referred to as "Transform".

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Unknown as to where exactly this is used, but judging by the name, this is probably related to GP (Guard Points), whether this condition is always active on players with GP, or only when getting hit and triggering the blocking animation is unknown.

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Likely a condition triggered everytime the player levels up, it might be the reason why you briefly get a rainbow-ish aura when leveling up.

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Unknown as to where exactly this is used, and it's unlikely to be Iida's burnout as there's another condition called "Skill_SpeedDown", along with "Skill_SpeedUp", while this one is just "SpeedDown".

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A condition applied when using a Piggyback special action. This likely controls everything related to piggyback, mostly the defense buff and the speed buff, Internally, this is actually 4 conditions, one for Izuku Midoriya, one for Tenya Iida, another for All Might, and a generic PiggyBack condition.

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Low Gravity is Ochako Uraraka's signature effect. Players with this effect will jump higher and fall slower, and their momentum will be extended. This effect can be visually identified by a pinkish outline on the affected character. The name of this effect in the files is "LowGravity".

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Recipro Boost is Iida's signature condition, which can be triggered through his gamma skill and allows him to run and attack extremely fast.

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Recipro Out is Iida's other signature condition, which triggers when his gamma skill runs out, greatly reducing his movement and attack speed and disabling the use of skills.

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Dumb is a self-inflicting condition unique to Strike Denki Kaminari's beta skill. When this effect is active, the player will be able to walk around with reduced speed, but won't be able to attack or jump..

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Hardening is Eijiro Kirishima's signature condition, which grants 40% Defense and superarmor, making the character resistant to flinching. This condition can be identified visually by a spiky red-orange aura around the character..

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Giant is Mt Lady's signature condition, which allows the player to become gigantic, granting 70% Defense and superarmor, as well as altering their speed and jump..

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Infection Decay is the signature DoT status effect of Tomura Shigaraki. It envelops players with a red shattered air aura, and deals True DMG with duration and damage defined by each skill. This effect has the particular property of spreading to enemies that are close enough to the affected player, spreading around like a virus. Infection Decay's name in the files is "InfectionDecay".

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Strike Boost is the condition given by the activation of a Strike Ability Card, increasing your damage output.

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Assault Boost is the condition given by the activation of an Assault Ability Card, increasing your defense.

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Rapid Boost is the condition given by the activation of a Rapid Ability Card, increasing your movement and attack speed, and giving you the ability to Wall Run. On some moves like Assault Kirishima's alpha or Technical Mirio's beta, it can actually increase the amount of hits from the move, which leads to a higher damage output (a common trait in abilities that increase attack speed). The damage increase is lower than that of a Strike Card however.

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Support Boost is the condition given by the activation of a Support Ability Card, granting you a healing aura that heals yourself and your allies, though it's likely that not this whole ability belongs to Support Boost, and instead part of it comes from the Influence of Ally Ability Heal condition.

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Technical Boost is the condition given by the activation of a Technical Ability Card, increasing your reloading speed.

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Superarmor is a special state granted temporarily by armored moves. This state prevents the player from flinching or be easily blown away, allowing them to fight back even while receiving an attack that normally wouldn't let them counterattack. This effect is visually represented through a yellow outline covering the player. Internally, there are 3 superarmor conditions, these being For Attack, For Damage and For Plus Ultra.

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Plus Ultra is a special condition achieved by reaching 100% Plus Ultra meter and triggering it. Plus Ultra is a state that lasts for 15s by default and grants faster reload speed and level 9 skills (with a 20% DMG boost) temporarily, and restores all of the user's GP. Plus Ultra does not provide a defense or mobility buff.

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The Invincibility condition makes the player immune to any source of damage, be it from attacks, DoTs, or the Poison Mist. This condition is given after being knocked down via 500 Downpower. This condition can be visually identified by characters glowing white.

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Compression is one of Mr. Compress' signature conditions. Currently unknown as to which part of his compression this refers, whether the state of being compressed, or the one of carrying a compressed ally.

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Compression Regeneration is Mr. Compress's other signature condition, which heals affected characters over time. This effect can be applied via Mr. Compress's special action.

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Camouflage is a special state some characters can apply to themselves, which renders them nearly invisible, only really able to see the character's edges. This state actually has some cool benefits to eat, such as being untrackable by tracking mark moves like Denki Kaminari's alpha or Izuku Midoriya OFA's overdrive gamma (if activated before their attack started), it also hides the Mark effect, serving as a counter of this effect. It also grants the character a speed boost.

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Permeation is Mirio Togata's signature state, which allows the user to be immune to damage or ability effects and walk through walls, floors, ceilings and other obstacles, with some exceptions. This effect can be visually identified by a blue/cyan outline and blue particles emanating from the user's body, as well as a shiny noise.

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This is an unknown condition that, judging by the name, displays the enemy's HP upon receivign a hit. Internally, it's marked as being NEITHER an Ally Buff nor an Enemy Debuff. It's unclear if this condition is what's used for Technical Shigaraki's alpha Search, partly due to the fact that conditions are roughly ordered by when they were introduced, so if we guide ourselves by that, this should have been introduced between Season 5 and Season 7.

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This is an unknown condition that, judging by the name, displays the enemy's GP upon receivign a hit. Internally, it's marked as being NEITHER an Ally Buff nor an Enemy Debuff. It's unclear if this condition is what's used for Technical Shigaraki's alpha Search, partly due to the fact that conditions are roughly ordered by when they were introduced, so if we guide ourselves by that, this should have been introduced between Season 5 and Season 7.

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Marked is a special effect that makes the player visible through walls for the user who inflicted this effect and their team. Visually, this effect looks like a red outline, but behind a solid surface, it looks like a red silouhette. This effect does no damage, but can be helpful to locate enemies. This effect can be inflicted by a few skills and the special tune Perception. It is unknown if Disp_Location_On_Hit is the condition linked to this effect.

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Orb Penalty is an interesting but unknown condition that might be related to a seemingly discarded gamemode leaked back in Season 1 known as "Orb Battle", a gamemode where you likely had to collect as many orbs as possible spread across the map. Orb Penalty could be a condition applied to players with many orbs to slow them down and balance the leading positions, but this is pure speculation.

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The Leader state is a condition that is likely related to the seemingly discarded gamemode known as "Leaders Battle" (or previously, Kings Battle). This condition might have been given by default to each team's leader, granting them currently unknown benefits/hindrances, but likely made the player's death give more points to the enemy.

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Bloodholder is Himiko Toga's other signature condition. Bloodholder is the condition in which the player holds the blood of another player without using it yet. This condition can be visually identified by a pinkish aura around the character, though this aura is invisible to enemies. Internally, this condition's name is "TransformStocking"

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Restoration is one of Overhaul's signature conditions, which allows for the healing of HP and GP, higher than that from its sister condition "RebuildMyself". This condition is applied by Overhaul's Special Action to allies only.

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Deafen is Present Mic's signature effect, which makes the target unable to hear anything but a strong ringing noise, losing any audible feedback, though this effect is useless against players who already play with volume off or heavely impaired by background noise/music. The name of this effect in the files "Noise".

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Zero Gravity is Ochako Uraraka's other signature effect. Enemies affected by this condition will slowly float upwards, unable to attack or perform any mobe. The name of this effect in the files is "LowGravityToEnemy".

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Copy is one of Neito Monoma's signature conditions, which allows the use of copied abilities instead of the default ones. You can identify this condition by the magenta outline around the character and the presence of greenish bits in abilities that enlarge body parts or use new ones, such as wings or enlarged fists. Visually, this condition is very similar to "Steal".

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Copyholder is another of Neito Monoma's signature conditions, which stores copied abilities that can be used through the condition above.

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A condition likely linked to Twice, but still not clear as to how. It's possible that this condition is applied to the clones themselves, limiting which skills they can use i nthe case of beta clones.

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An unknown condition that is likely related to Training Mode's HP Regeneration setting.

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An unknown condition that is likely related to Training Mode's GP Regeneration setting.

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An unknown condition that is likely related to Training Mode and Area Control Battle's respawn mechanic.

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Crazy Torch is Strike Dabi's signature condition, increasing damage by +20% and granting a movement speed boost, as well as granting special benefits to Strike Dabi's alpha and beta skills even on copy characters. Whether the flame circles count as part of the skill or part of the condition is unknown.

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Steal is All For One's signature condition, allowing the use of stolen quirk skills. Visually, this condition gives the character a magenta outline and makes enlarged or foreign bodyparts have a green tint.

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Teleport is a condition possibly related to All For One's gamma skill, allowing the teleportation of targets. Currently unknown if this condition is also applied to Kurogiri and his portals.

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Self-Restoration is another of Overhaul's signature conditions, which allows the instant restoration of all HP and some GP. This condition can be seen when using Overhaul's special action on yourself.

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Petrify is Overhaul's signature state effect, inflicted by the skills Coffin of Absolute Shackles and Coffin Shot. Characters that become petrified are unable to move for a very short amount of time, and can be attacked while in this state. Petrified characters will have a layer of earth covering their body temporarily. This condition is actually 2 conditions, one is used by Support Overhaul's gamma, while the other is used by Assault's.

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Brainwash is Hitoshi Shinso's signature condition, which decreases movement and attack speed greatly, fogs vision and hides teammates' overhead UI for the affected user. The only benefit for brainwashed enemy is that this effect also increases downpower received by 3, making it easier for the victim to be knocked down so they aren't comboed to death with ease. This effect can be visually identified by the moving question marks above the affected player.

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Brainwash is Hitoshi Shinso's other signature condition, which takes away control from the enemy, not allowing them to do anything besides emoting, and can be directed somewhere else via Persona Command (Shinso's other Special Action). Taking any form of damage, even if it's Poison Mist damage, will dispel this effect. You can identify this condition by stars rotating above the affected character's head.

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Electrified is one of Denki Kaminari's signature conditions. It allows to envelop one's body in electricity, briefly inflicting Shock and 150 Downpower when an enemy comes in contact with the electric aura.

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Furious Ascent Armor is Strike Itsuka Kendo's signature condition, which grants the user high defense and superarmor, as well as blocking physical grabs such as Strike Dabi's.

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Steel is one of Neito Monoma's signature conditions, which protects the user from a single instance of damage and grants i-frames after.

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Transmission is one of Izuku Midoriya OFA's signature conditions, which grants a speed boost that increases with the transmission level. At maximum transition level, it unlocks the full potential of Izuku Midoriya OFA's beta and gamma skills. This condition isn't the same as that of the tuning Acceleration, as this tuning has no ties with the overdrive system. This condition can be identified easily by the blue trails behind the character.

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Fa Jin is Izuku Midoriya OFA's other signature condition, which increases horizontal and vertical jump height, allowing for high jumps and fast long jumps. This effect can be visually identified by the presence of reddish energy in the character's lower leg.

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Special Action Seal is All For One -Youth Age-'s signature condition, allowing to disable the use of the affected character's special action. You can visually identify this condition by the presence of black and red electricity around them.

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Perfect Permeation is another of Mirio Togata's signature condition. This allows the user to permeate through any surface, literally any, from buildings that normally can't be permeated through, to the ground itself. This condition is used by Mirio's dash special action, and can sometimes lead to the character falling below the world (though underground there are "deathplanes" that teleport you back to the surface after hitting them).

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Super Recovery is Technical Tomura Shigaraki's signature condition, which heals the character's HP and GP and inflicts Infection Decay to enemies near the Super Recovery player. This condition can be visually identified by the presence of red, black and purple particles emanating for the player's body.

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Wave Veil is Support Nejire Hado's signature condition, which grants a veil that buffs Rapid Mirio Togata's beta, Technical Mirio Togata's gamma, Tamaki Amajiki's gamma, and Support Nejire Hado's alpha and beta skills. It's unknown if the Stamina points her gamma gives are part of the condition or just something her skill adds on top.

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Black Ankh is Fumikahe Tokoyami's signature condition, which enhances the user's melee capabilities, including damage, range, lunge, and the presence of projectiles emerging from melees. Black Ankh also boosts the upwards flight boost from Fumikage Tokoyami's flight special action.

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Grab is a condition applied by certain skills that immobilize the player while simultaneously dragging them, either physically or from a distance. It's speculated that not every "grab skill" actually applies this condition, and only those where the enemy character is suspended and moving their feet quickly are the ones that count as actual grabs (as the rest such as Tamaki's alpha or Assault Deku's gamma would fall in a different category that isn't managed by a condition).

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Sleep is an unknown condition that was found in a previous recent season but is currently removed. Apparently, this condition is applied to allies, not to enemies, which is definitely interesting considering sleep effects are often a debuff in games.

Double Impact

Double Impact is an unknown condition that was found in a previous recent season but is currently removed. This condition's name is similar to that of a quirk called "Twin Impact" from Class 1-B, which has made some people speculate about a Neito Monoma Alternative Battle Style.