Beam is a Shark Fiend in Chainsaw Man, a devil-human hybrid who can transform parts of his body into shark features. He serves under Denji and is one of the Public Safety Devil Hunters’ allies during major battles. Beam is energetic, fiercely loyal, and highly enthusiastic about Denji, whom he admires as his “Lord Chainsaw.” He provides mobility and combat support, especially through his shark abilities, and plays a memorable supporting role in the series’ intense action arcs.