Seviper are fairly large snake Pokémon that are usually depicted scrunched up like an accordion. They are mostly black in color, but have several markings on their body. Seviper have yellow hexagon markings that run from their head to their tail, small yellow bumps where they touch the ground (this is presumably to help with movement) and various purple scar-like marks. Seviper has several different weapons it can use in battle, such as elongated red fangs that protrude from the mouth and a partially red-colored, bladelike tail that it can use to stab or swipe. Seviper also have fierce red eyes that make it able to use attacks like Glare.