Hezrou are infernals in the form of humanoid toads with a mouth full of sharp teeth. They prefer to attack with their claws and bite, and if a hezrou hits with both claws it automatically grabs its opponent, preventing any normal man-sized or smaller foe from moving as well as gaining a +2 with all subsequent bite attacks. A victim held in this way cannot generally attack, but may break free with a normal roll to open doors. As with most infernals, a hezrou can only be damaged by magical weapons.

Hezrou can freely communicate telepathically, and have Darkvision to 60 feet. Each can teleport at-will (as a 10th-level Magic-user). Additionally, a hezrou can cause fear (remove fear spell reversed) as its action for a round of combat.

Once per day a hezrou can summon another hezrou, but this has only a 20% chance of success; if the attempt fails, the hezrou can try again as often as desired (once per round maximum) until it succeeds.