Vemmon resembles a small alien, with three-fingered hands and reverse-jointed legs. Its whole body is a shade of purple, its helmet slightly darker than its torso. Vemmon has green eyes, and his left one is hidden by the black visor on its helmet, which completely covers its elongated head. A chain is attached to its neck. Its mouth is based on Tentomon's. Vemmon was designed by αρχιμεδεｓ, and was originally an alternate design for Snatchmon.