From Sonic Retro
Bomb Beetle, ボムビートル, is a GUN robot that appears in several stages of Sonic Adventure 2 and part of the Beetle series. It's a regular Mono Beetle with a motor of some sorts attached behind and an opening on the bottom where exploding bombs drop from. Its characteristic movement is moving in a circle and it awards 100 points when destroyed.
|Normal mode||Hard mode|
|Sonic||Green Forest||City Escape, Metal Harbor, Green Forest|
|Eggman||Sand Ocean, Lost Colony|
|Sonic Adventure 2|