Flomp

Flimps are a new type of enemy appearing in the game Super Mario Galaxy 2. They appear as a green platform with spikes on their sides and have a similar face to a Pushy Wall. They move from side to side. At first glance, they seem like ordinary platforms, but after a few seconds, they make a malicious face and quickly flip over. If Mario or Luigi was on one of these platforms when they flipped, they would be knocked into the lava or into a Black Hole. They appear in only 2 galaxies, Bowser's Lava Lair and the Grandmaster Galaxy.

Trivia

 * Flimp is a pun of "flip" and "Thwimp".