Leomon

Leomon is one of the first good Digimon that the DigiDestined met on File Island. He is a Champion level Digimon.

Digimon Adventure
In Evil Shows His Face,

In Subzero Ice Punch!,

In A Clue from the Digi-Past,

In DigiBaby Boom,

In The Legend of the Digidestined,

In Departure For a New Continent,

In Ogremon's Honor,

Digimon Adventure 02
In A Million Points of Light, Leomon briefly appears during the final battle with MaloMyotismon as the partner of an unknown DigiDestined.

Digimon Adventure tri.
In Determination,

Trivia

 * He is one of DigiDestined's allies to return in Digimon Adventure tri..
 * He is second of DigiDestined's allies to become Infected Digimon.
 * He dies two times.