Roader

A Roader (, Roader) is an enemy in Super Smash Bros. Brawl's Subspace Emissary mode that first appears in The Battlefield Fortress.

Enemy description
Roaders are one-wheeled red motorcycles with a spiked motocross helmet. They are fast, easily outrunning Sonic on most difficulties. Upon spotting the player's character, Roaders charge at top speed attempting to ram them. When near a gap, they can try to jump to the other side. Roaders cannot suffer careening as, upon defeat, their head explodes, but their wheel starts flying away for a similar effect. Its attack deals very high knockback, but has very poor traction, which causes it to slide over. It may also attempt to attack by jumping backwards.

The concept and design of the Roader might be based on the Helper form of from the Kirby series.