Alphamon

Alphamon
Alphamon, an Exalted Knight Digimon, is not just one of the 13 Royal Knights but also their leader of legend. He is a Digimon of great power due to his possession of the "Alpha-Gain-Force". However, this very same factor has deemed him "Lord of the Empty Seat"; as he is destined to rule the Royal Knights but to be forever absent from their ranks. Thus his fate leaves to make only temporary appearances wherever his aid is needed.

Alphamon wears a blue cape similar in design to Omnimon's. He wields the "Alpha Inforce", which is an ability that allows the user to gain the power of invincibility by repeating attacks the user wouldn't have understood before, thus rewriting the course of history. Therefore, while many see the opponent being deleted in a final blow, it is really Alphamon laying on attacks that successfully delete the opponent. Moreover, variegated attacks and defensive maneuvers can be shown through a magical square that appears from his hands, which is carved in "Digi-Code".

Alphamon's name is a reference to "alpha", the first letter of the Greek alphabet. This creates a thematic link with himself and Omnimon, whose Japanese name is Omegamon - effectively, a reference to the concept of the Alpha and Omega.

Digital Monster X-Evolution
When attacked by Omnimon, DoruGreymon digivolved to Alphamon, regaining his memories. He told Omnimon that that he can't forgive Yggdrasil and thus Omnimon immediately sided with him and took him to see Yggdrasil. Before they could enter Yggdrasil's chamber they had to face DexDorugoramon, whom Alphamon managed to destroy with his Digitalize of Soul attack. They then entered Yggdrasil's inner sanctum to destroy the host computer but then Dexmon (the reformed DexDorugoramon) appeared and a violent battle began. Powering up to his Ouryuuken Mode (though this was never mentioned in the movie), Alphamon attacked Dexmon - but his body also suffered all attacks he inflicted on Dexmon. This caused Alphamon to realize that Dexmon was his "other half", created from the data Yggdrasil removed from Dorugamon's body. Knowing this, he hurled his blade in a boomerang arc and grabbed Dexmon as the blade returned, impaling them both. Alphamon transferred his X-Antibody to Omnimon before merging with Dexmon and regressing back to Dorumon.

Digimon Data Squad
All the confirmed Royal Knights have made episode appearances except for Alphamon. (And Examon.) Though he does not make an episode appearance in Digimon Data Squad, he does make a small cameo appearance in the second opening of the series.

Digimon D-Cyber
Alphamon is once again the final form of Dorumon, who is Hikaru Ryuuji's Digimon partner.

Digimon World DS
Alphamon is the main antagonist (though with mislead intentions) in this game, going by the mysterious alias "Unknown-D". Eventually, his plan leads to awakening the Legendary Digimon, which you, the tamer, must defeat.

Digimon World: Dawn/Dusk
Alphamon digivolves from Knightmon depending on its stats. It can also be DNA digivolved from DoruGreymon, MagnaAngemon, or Magnamon.

 Attacks  Variations / Subspecies
 * Digitalize of Soul: Summons a monster from another world that devours his enemies. The attack is also depicted in the form of firing multiple green energy beams from his hands.
 * Holy Sword Grade Alpha: Summons his unique weapon, the holy sword of the same name, from within another dimension.
 * Alphamon (Kyuukyoku Senjin Ouryuken)

Alphamon (Kyuukyoku Senjin Ouryuken)
Alphamon (Kyuukyoku Senjin Ouryuken) is an Exalted Knight Digimon and the powered up version of Alphamon. Alphamon achieves this form through Blast Evolution, "merging" with OwRyumon who then becomes his sword and wings.

Digital Monster X-Evolution
Alphamon (Ultimate War-blade OuRyuuken) appears at the end of the Digital Monster X-Evolution movie, though he is still named Alphamon and there is no digivolution scene or any mentioning why he changed. In this form he fights against Dexmon and when he realizes that the evil Digimon is his shadow, he uses his sword to impale himself on Dexmon. Before he vanishes he gives his X-Antibody to Omnimon, X-modifying him into Omnimon X. Afterwards he merges with Dexmon and becomes Dorumon again.

Digimon D-Cyber
Alphamon (Kyuukyoku Senjin Ouryuken) appears when the powers of Magna, one of the Holy Knights allows OuRyuumon becomes a sword for Alphamon.

 Attacks
 * Kyuukyoku Senjin Ouryuken (究極戦刃王竜剣): Uses his giant sword transformed from OuRyuumon to attack his enemies.
 * Digitalize of Soul: Summons a monster from another world that devours his enemies. The attack is also depicted in the form of firing multiple green energy beams from his hands.