Mighty the Armadillo
Knuckles's Easy-Going Pal
A - Jump
A+A (when against a wall) - Kick off from wall
B - Grab onto enemies and kick off from them
R - Spin dash
Mighty can latch onto walls, and then kick off from them. This can be done against several parallel surfaces in succession, and if they're broken he can climb them even though Knuckles might not be able to. He also has a Ristar-esque ability to grab enemies and kick off of them, destroying them while giving himself a boost."