Idle poses (sometimes referred to as idle animations, and referred to as Wait in internally in all games since Super Smash Bros. Melee) are minor, mainly nonconsequential animations that play at random if a character stands still for a length of time.
Though mostly aesthetic, idle poses can change the direction of the passive shields carried by Toon Link and Young Link, as well as Link prior to Super Smash Bros. 4, therefore affecting their ability to block projectiles.
Lists of idle poses
Main article: List of idle poses (SSBM)
Main article: List of idle poses (SSBB)
Main article: List of idle poses (SSB4)
Main article: List of idle poses (SSBU)
List of characters without mirrored stances
Main article: Stance mirroring