Pumpkin Head

Pumpkin Head is the conjectural name of an enemy from Super Mario Galaxy. They are found near a haunted house level and resemble Splunkins, but they are actually Goombas wearing jack'o'lanterns. They are found mainly in the Ghostly Galaxy.

They are defeated the same away as a Goomba except Mario must first break the Jack o'Lantern before Star Spinnig on the Goomba and then kicking him.

The species is probably a reference to Super Mario World. In that game, if you find all 96 exits, the Goombas will then wear pumpkin masks as these do.