Egg Fighters are humanoid combat robots built by Dr. Eggman and serve as the doctor's primary foot soldiers in Sonic Unleashed. They have large, bowl-shaped upper bodies with a small dome head. Realistically, their legs shouldn't be able to hold their bodies up. They are programmed to attack and kill Sonic the Hedgehog on sight and typically attack with rolling punches or by rotating their upper bodies with their arms outstretched. They also carry a variety of weapons and shields in battle, such as bumper shields, electrified shields and chainsaw-swords. Their hands are also detachable and can function independently from the body.