Glunder

A Glunder is one of three "gl" wheel-like creatures that travel around the edges of platforms in Super Smash Bros. Brawl. If the player happens to near one, it opens up and emits damaging electricity.

Glunders return in Super Smash Bros. for Nintendo 3DS as enemies in the Smash Run mode. They behave identically to their appearance in Super Smash Bros. Brawl.