Magmortar is a large, vaguely humanoid, red-and-yellow-striped Pokémon with an egg-shaped body. It has pink lips on its dark face. It has yellow, tubular arms with three small claws on each "hand". When Magmortar prepares to shoot fire from its hands, the claws may disappear into its skin, forming something similar to a cannon. It blasts fireballs of over 3,600°F. Its legs are small in proportion to its body with pink thighs, red feet, and black shackles around the ankles. It has one large flame on its head, as well as large flames on its shoulders and tail. Additionally, it has four pink spikes on its back.