11 year old Feedback has a black and white color scheme similar to Buzzshock. Feedback has one green eye in the middle of his head. He has two antennae and a tail each featuring a plug on its tip that allows him to draw energy to himself. He has four fingers on each hand with similar plugs on the tip of each finger. Feedback has only two front toes.
16 year old Feedback looks very similar to his 11 year old self, except that he is more muscular with gold battery bolts on his shoulders, arms and hips. He also has a black and green color scheme comparable to Diamondhead's shirt. His antenna are noticeably longer than when he was eleven. The round plugs on his fingers are now square.
Feedback wears the Omnitrix symbol on his chest.