Pooker is an enemy appearing in Mega Man 6. It is a very flat metallic shell or hemisphere with two eyes peeking out and a hatch on top, from which it can fire projectiles.
In the Games
Mega Man 6
in-game sprite.
In Mega Man 6, Pookers are found in the Oil Field (Flame Man) and Ancient City (Centaur Man) stages, later reappearing in Mr. X stage 3. They are stationary enemies that sit flat on the ground, launching small projectiles towards Mega Man in a tall arc, but at a slow pace. Though immune to most attacks, a charged shot from the Mega Buster or Power Mega Man can be used to flip them over, which destroys them if they hit the ground.
Flipping a Pooker into oil (whether it has been ignited or not) reveals a hidden property, causing it to inflate into a harmless air cushion platform with a pedal on top, quite similar to the Hover enemy in Mega Man 4. If Mega Man jumps on the pedal, the platform moves a very short distance in the direction he is facing, enabling him to cross the oil or flames by jumping on it repeatedly.