Dimo is one of the three "wild" Jägermonsters who help Agatha and friends in all manner of combat situations (combat, after all, being what Jägermonsters are good for). He is the one with a perpetual wide, sharp-toothed grin, greenish eyes with no obvious pupils, and a greenish complexion. Oh- and (eventually) one arm. He's known for his keen sense of smell - Dimo was the first to recognize that Agatha was a Heterodyne, and has been known to use his sense of smell to resist the effects of hallucinatory gas.