Alphamon is the Mega level of the Dorumon digivolution line in the Digimon franchise. Alphamon is also the absent leader of the Royal Knights, a group of thirteen powerful Digimon that serve as protectors of the network. His second-in-command, Omnimon, rules the group in his absence.
Role in the Games
Alphamon acts as the main antagonist of Digimon World DS, where he goes by Unknown-D. He disapproves of humans taking care of Digimon as Tamers because he believes humans make Digimon weak. To carry out his plans he seeks the legendary Digimon, Chronomon but it turns out to be a force that he cannot control.
Alphamon appears as a boss alongside Omnimon and Gallantmon in Digimon Story: Cyber Sleuth, and can be unlocked by digivolving from DoruGreymon. A female Alphamon also appears as one of the game's main protagonists.
Role in the Anime
Alphamon serves as the main antagonist of Digimon Adventure Tri anime.
In Digimon Adventure Tri's first movie "Reunion", Alphamon's silhouette is shown defeating Davis, Ken, Yolei and Cody, seemingly destroying their D3s in the process.
Alphamon's hand is later seen at the end of the Kuwagamon battle, where he crushes the final Kuwagamon from within the Digital World.
Alphamon finally makes a full appearance in the real world at the end of the movie, attempting to hunt down Meicoomon and prompting Tai and the other Digidestined to come to its rescue. Eventually, WarGreymon and MetalGarurumon DNA-Digivolve into Omnimon, who, after a brief clash, makes Alphamon retreat back to the Digital World.