Nemo is a humanoid robotic entity, 1.8m in height. His head is a flat monitor, displaying a pair of pixelated eyes and a mouth. He is capable of changing expressions according to what he is feeling. Nemo is capable of projecting a tongue made of physical static.
Nemo has indentations filled with LED lights on certain parts of his body, such as on his stomach, as well as on the sides of his arms. The lights change color depending on Nemo's mood: green for "calm", pink for "flushed", etc.