Prototype is a doll-like blocky robot who has white plastic casing. He has six horns, four being placed on their head and 2 on the lower part of their face. He also has claws with 4 fingers, which along with the horns are pink, yellow, blue, and purple. Parts of their metal insides are shown through broken.If you gets too close, he will occasionally reach out to touch you.This is stated to be just because they are curious He is Sily,curious and innocent and childish and energetic.