For the condition that occurs causing characters to shake back and forth while immobile, see Paralysis.
Stun is an effect in Super Smash Flash 2 that leaves the player unable to do an action for several moments. Stunned character notably look dazed or confused, some even heavily pant as well. Similarly to other effects, such as burying, mashing buttons will reduce the stun's duration.
↑ 1.01.1These elements currently stun opponents as of the most recent version of the Beta but will put opponents to sleep instead in a future update.
Trivia[]
Bandana Dee, Marth, and Sandbag are the only characters that use their sleep animations whenever they get stunned but those are otherwise treated as their actual stunned animations.
Moreover, Waluigi, Kirby, Ness, and Sora are also the only characters that produce vocal noises when they are stunned. Similarly, Black Mage produces a high pitch sound effect when he is stunned.
Goku's stun animation is a reference to the heart disease he contracted via a virus during the "Androids saga" arc in the Dragon Ball manga and the anime Dragon Ball Z.
Bowser's stun animation is a reference to his "low HP" and "sick" animations in Mario & Luigi: Bowser's Inside Story.