Pooker

Pookah (プッカー) is a mortar-like enemy in Mega Man 6. When hit by a charged shot from the Mega Buster or Power Adaptor, they flip over and explode... except in certain parts of Flame Man's stage, where they can be used to ride across the oil (and flames) safely. They also appear in Centaur Man's stage and Mr. X stage 3.