Rollin' Gear

Rollin' Gear (ローリンギア) is an enemy Mechaniloid that appears in Grizzly Slash's stage in Mega Man X5. It is basically a red machine with big tires that move and bounce around.

Trivia

 * This enemy's data can be found in Mega Man X4, more specifically in the second section of Storm Owl's stage. This implies it might've been intended to be used in this game but ended scrapped for some reason.