Bone Goomba

Bone Goombas are enemies first appearing in  New Super Mario Bros. 2 , and later in more games: Mario Party: Island Tour, Paper Mario: Color Splash, Mario Sports Superstars, Dr. Mario World, and Paper Mario: The Origami King, as well as a cameo appearance in Mario+Rabbids Kingdom Battle. They are blue, skull-wearing variants of Goombas.

 Appearance:  They wear skulls on their heads, but other than their appearance, they seem to be identical to ordinary Goombas.

 How to defeat:  Like Goombas, they can be stomped.