Bramball

Bramballs are a new type of enemy found in New Super Mario Bros. Wii, found solely in Toxic Forest. They appear as spherical Pokey-esque enemies with brambles for arms jutting out of their sides. Their sole attack is moving around a set path by flipping themselves around. Bramballs can be defeated by jumping on the ball in the center. Hitting them from underneath will release coins.

Trivia

 * Bramball's name is a play on the words "bramble" (of which its long appendages are made out of) and "ball".