Concussion is a non-Damaging detrimental effect that reduces the owner's Ability Accuracy. It is mostly found in Mutant
and Science
Champions.
List of Champions with Concussion[]
Debuff[]
- Base Abilities
- Synergies
Beast
- with Kraven
Dragon Man
- with Kraven
Kraven
- with Beast, Dragon Man or Sasquatch
Sasquatch
- with Kraven
Spider-Ham
- with Scorpion
- Self-Inflicted
Passive[]
- Base Abilities
- Synergies
Spider-Woman (Jessica Drew)
- with Arnim Zola, Crossbones or Red Skull
List of Champions that counter Concussion[]
Immunity[]
- Base Abilities
Emma Frost
- While in Diamond Form
Shocker
- Debuffs only
Spider-Punk
- Debuffs only
Yondu
- Debuffs only, when fighting
Champions
Ability Accuracy Modification Immunity[]
- Base Abilities
Archangel 
Lady Deathstrike
- When fighting
Champions
Longshot
- Non-Debuffs only
Mephisto
- Passives only
Mordo
- Passives only
Mysterio
- While Mysterio's Helmet is active
Nimrod
- When fighting
Champions
Old Man Logan 
Omega Sentinel
- When fighting
Champions
Red Skull
- When fighting
Champions
Shuri 
- Non-Playable
Ares 
Black Widow (Scytalis)
- while Corrupted Armor is active
Dread Emperor Doom 
Glykhan 
Gwenmaster 
Hulk (Bahamet)
- while Corrupted Armor is active
Iron Man (Cerastes) 
Nameless Grandmaster

Nameless Thanos 
Superior Kang 
Thanos (Infinity Gauntlet) 
The Grandmaster

Treasure Deadpooloid 
Trivia[]
- Before Update 33.0,
Karnak
's Special 3 Daze was labelled as a Passive Concussion, albeit only reducing Defensive Ability Accuracy. This was replaced with a Disorient Debuff after Update 33.0. - Special Concussion is a variant of Concussion that only reduces Ability Accuracy during the Opponent's Special Attacks; however it is a separate effect and is unaffected by Concussion Immunity.
- Immunity to all forms of Ability Accuracy Modification grants full immunity to Concussion. Immunity to Passive Ability Accuracy Modification grants immunity to Concussion Passives only.