Granbull are purple bulldog-like Pokémon that are capable of standing upright. Their most notable feature is their particularly pronounced lower jaws. If eclipsed by its more prominent lower jaws, Granbull also has two small fangs visible on its upper jaw. Granbull's ears are flat and curved in surface, and their nose is black. They also have a black collar around their neck with two small white patterns on it, and two band-like black markings on their arms.
Granbull has notably powerful, pronounced, and prominent jaws, capable of immense crushing power, which Granbull uses to perform attacks such as Bite, Crunch, and the elemental fang trio. It can also learn Outrage, which is usually learned by Dragon-type Pokémon.
Despite appearing fierce-looking they are actually very timid, loyal and playful. The jaws are so heavy that the Pokémon have trouble keeping their heads up. Unless Granbull is startled, it will try not to bite indiscriminately. If attacked, Granbull will flail about to fend off its attacker.
Granbull wander around urban areas.
This Pokémon was unavailable prior to Generation I.