Spike Top

Spike Tops are enemies from the Mario universe. Spike Tops are Buzzy Beetles with shells that are red and have a single spike projecting out of the top (hence the name), making them impossible to jump on, however, it's posssible to attack them, Spike Tops can crawl around the walls and ceilings of caves.

In Super Smash Bros. for Nintendo 3DS / Wii U
Spike Tops appears as common enemies in Smash Run, with his New Super Mario Bros. design, they seem to do the same thing as they did in the Mario games.