Calumon

Calumon is a Holy Beast Digimon whose name is derived from "Grow" (『来る』).

Digimon Tamers
Calumon is the Shining Digivolution, incarnated by the Digimon Sovereigns into the form of a Digimon. Calumon is the only Digimon with the Tamers who does not have its own Tamer. Also, Calumon has no attacks whatsoever. Like some Digimon, Calumon doesn't even digivolve.

Digimon Tamers: Brave Tamer
Calumon plays a key role in the story as he is the one that always asks the right questions and is usually the first to enter portals that ENIAC conjure, thus forcing Ryo and co. to go along as well. Calumon is also the one that leads Ryo back to ENIAC for his rescue missions and had sensed when ENIAC's world was nearing its end. After the jogress between ZeedMillenniummon and Monodramon, Calumon returns to his world and time.

A Calumon card can also be used to enable DNA Digivolution once equipped.

Digimon Battle Spirit
In Digimon Battle Spirit, Calumon appears as a digivolution item, which digivolves any player who touches it.

Digimon World 3
Calumon is a card that decides a player's turn in Card Battles. If the player draws it, he gets to go first.

Digimon World DS
Calumon is a helper in the DigiFarms of the game. Calumon can be added to the player's party (after completing Quest 60), but it is unable to digivolve. Calumon has a default level of 99 and scan data is given with Beelzemon's data at the near end of the game.

Calumon's Trait significantly boosts the EXP all of your Digimon receives after a battle, and has some of the best support moves in the game, including one that fully revives all fallen allies,making it one of strongest Digimon in the game.

Digimon: Dawn/Dusk
Calumon appears on the Union Bridge after the completion of The Final Battle. He will display the credits when talked to, and after completing The Legendary Tamer, he will give the player his scan data.