Sonic 06 egg armor 02

Egg Armors are beetle-shaped robots created by Dr. Eggman. They share a similar body structure with the Egg Bomber but possess different abilities. As its name suggests, this robot is reinforced with armour plating, making it tougher to destroy. It can curl up into a ball which increases its protection, and can roll into enemies. While it is rolling, the Egg Armor is indestructible.