Ogremon

Ogremon (voiced by Beau Billingslea) is a Champion-Level Evil Digimon who is Leomon's rival. Ogremon served under Devimon under the promise that he would get to defeat Leomon (who was possessed by Devimon) after he was no longer needed. Later, when the Dark Masters were conquering the Digital World, after being injured by a meteor, Joe and Mimi showed him kindness and he allied with the Digi-Destined to defeat the Dark Masters.