Megadramon

Megadramon is a Dark Dragon Type Digimon, who often works with Gigadramon, who is nearly identical to it except that Gigadramon has grey skin and mechanical wings.

Digimon Adventure
Megadramon and Gigadramon worked for Machinedramon as air troops, and bombed Machinedramon's city in order to destroy the DigiDestined. It was unknown what became of them when Machinedramon was destroyed by WarGreymon.

Digimon Adventure 02
A Megadramon was among the Digimon that crashed Matt's concert at Christmas.

Digimon Tamers
When Rika, Renamon, Kazu and Kenta appeared in a mechanical, cloudy level of the Digiworld, they discovered and fixed a jammed clock, against Clockmon and Hagurumon's protestations. This act freed the imprisoned Megadramon, who tried to absorb Renamon's data so that it could travel to the Real World. Though Renamon digivolved to Kyubimon, she was overwhelemed, and it took the surprise appearance of the legendary tamer Ryo and his partner Cyberdramon to re-imprison Megadramon.

Digimon Adventure V-Tamer 01
Another Megadramon was with Neo when he invaded Lord HolyAngemon's castle, but it was destroyed by one of the two Knightmon.

Digimon World
Megadramon is obtainable by digivolving Devimon, Tyrannomon, Airdramon, and Seadramon. To obtain via digivolution you need 3000 HP, 5000 MP, Off 500, Def 300, Speed 400, Brains 400, 55kg and 10 or less care mistakes. (BONUS CONDITION: 30+ battles) A wild Megadramon appears as the second boss in Mt. Infinity. Megadramon is not a required boss fight; the player has the option of fighting it. Megadramon is the only enemy with the powerful mechanical technique DG Dimension, except Giromon. Once defeated, he joins the city's arena. He randomly appears outside of the arena building, bragging about his strength. He sometimes fights in the grade A/S tournaments.

Digimon World 2
Megadramon can be obtained by trading a Numemon in the Digimon Center in Digital City. Megadramon can digivolve from Cyclonemon or Deltamon.

Digimon Digital Card Battle
Megadramon lives in Steep Road with his brother, Gigadramon, and fights in the Battle Arena as the second-to-last opponent. He belongs to the Dark card group.

Digimon World 4
Megadramon is only seen in Machine Pit and its dungeons.

Digimon World DS
Megadramon digivolves from Stingmon, and can digivolve to Machinedramon. Megadramon also appears at the Junk Factory

Digimon World Dawn/Dusk
Megadramon digivolves from Airdramon, and can digivolve to Darkdramon.

Attacks  Variations / Subspecies 
 * Darkside Attack (Genocide Attack): Shoots many missiles out of his metal hands.
 * Ultimate Slicer: Slices with his claws.
 * Parry Force: Flaps his wings, deflecting attacks with wind.
 * Gigadramon