Heatmor is a bipedal, anteater-like Pokémon. It has a beige face while the rest of its fur is red with yellow stripes sharing appearance of molten lava. On its lower abdomen, back, and underside are raised, beige coloured bands which resemble pipes, leading to its tail. Its claws, on both its feet and hands, are a dull yellow and on its wrists are raised, dented bands; both the wrists and feet are beige-colored. Its tail is dented upward and has a hole in it, similar in appearance to a muffler. It also seems to serve the same purpose as a muffler, being able to expel gases.