Walleyes are Whomp-like enemies that first appear in the game Super Mario 3D World. They are similar to the Wallops in Super Mario 3D Land, with spikes on their sides and top. Their name comes from "wall", referring to them being moving walls, and possibly a pun on the term "wall-eyed", a condition that causes a person's eyes to drift apart from each other.
Walleyes first appear in Super Mario 3D World as rare enemies. They move from side to side in an attempt to keep the player from walking past them. Contact with the spikes on their sides and top causes damage, but their fronts and backs are safe to touch. Walleyes can be temporarily dazed by a projectile or a claw attack, and can be destroyed by Lucky Cat Mario or White Tanooki Mario. They only appear in Ty-Foo Flurries, The Great Goal Pole, and Mystery House Marathon.
Walleyes appear in Super Mario Party as non-playable characters. They can appear in Follow the Money as obstacles, where they run back and forth constantly, and they can also be seen in Absent Minded.
Appears in the Nintendo Switch version. • * Introduced in version 1.1.0 of the Wii U version. • † Introduced in version 1.2.0 of the Nintendo Switch version.