Ogremon

Ogremon is anti-hero of Digimon Adventure. He is rival of Leomon.

Digimon Adventure
In  Evil Shows His Face, 

In  Subzero Ice Punch! ,

In  The Dancing Digimon,

In  DigiBaby Boom,

In  The Legend of the DigiDestined ,

In Home Away From Home,

In WereGarurumon's Diner,

In Etemon's Comeback Tour,

In Ogremon's Honor,

In Joe's Battle,

In Piedmon's Last Jest,

In The Fate of Two Worlds,

Digimon Adventure 02
In Enter Flamedramon, when T.K. and Kari commented that their teacher looked like him.

Trivia

 * He is Champion Digimon.
 * He is one of DigiDestined's allies to return in Digimon Adventure tri..
 * He is first of DigiDestined's alliies to become Infected Digimon.