Andromon

Andromon is an Android Digimon whose name and design are derived from the Android. It was developed at the same time as Boltmon — while Boltmon was created to be more fleshed-based, Andromon was designed to be more mechanical. It is able to defeat weak Ultimate Digimon with a single attack, and is sometimes described as being one of the most powerful Digimon, as its body is a tireless machine capable of taking on many larger Digimon with little to no effort.

Andromon lacks much emotion and usually acts only in accordance with its programming, though certain Andromon have artificial intelligence installed, allowing them to have free will. However, since there are only five known such Andromon, it is unknown whether this was intentional. The technology used to develop Andromon was also used to develop other machine Digimon like Megadramon.

Digital Monster X-Evolution
Andromon was among the Digimon which met with several X Digimon to discuss Yggdrasil's plans. However it turned out that Andromon was a spy for Yggdrasil and was informing it of all the happenings during the meetings of the Royal Knights. When Omnimon appeared and attacked the X Digimon, Andromon was sure he had made the right decision, but when Omnimon turned around and attacked him and his comrades he realized that WarGreymon X and the other X Digimon were right the whole time. Wargreymon X threw his Dramon Killer at Omnimon in a vain attempt to stop him, but it was repelled by Omnimon's Transcendent Sword. The Dramon Killer ended up impaling Andromon, and he died shortly after, briefly smirking at his once ignorance.

Digimon Adventure: Anode/Cathode Tamer
Andromon is a Variable dealing damage to one enemy.

Digimon Adventure 02: Tag Tamers
Andromon digivolves from Tankmon

Digimon Tamers: Brave Tamer
Andromon appears as the boss which must be fought to save Koushiro "Izzy" Izumi as well as a regular enemy. His card, when equipped, gives a chance of dealing increases damage in battle.

Digimon World
Andromon digivolves from Meramon, Centarumon, Ogremon, Leomon or Angemon. A wild Andromon maintains Factorial Town and is oblivious to a Giromon saboteur, who is ruining the network. Once the player defeats Giromon, Andromon apologizes and begins retrieving the sabotaged data. He occasionally appears in File City and compliments the look of it.

Digimon World 2
Andromon is one of the many types of Ultimate Digimon you can find in the wild. He digivolves from Angemon and can digivolve to Seraphimon.

Digimon Digital Card Battle
Andromon belongs to the Dark card group.

Digimon World DS
Andromon digivolves from Guardromon, and can digivolve into HiAndromon. Andromon also appears in the Hard Mountains.

Digimon World Dawn/Dusk
Andromon digivolves from Guardromon, and can further digivolve into HiAndromon. In Dusk Andromon appears in Chaos Brain and there is one in the Dark N area. Putting a "Cool" Andromon in your farm island unlocks a machine species quest in dusk after meeting the other requirements

Attacks 
 * Lightning Blade (Spiral Sword): Roboticly changes his hand into a blade form that spins very fast and creates an electrical current which he hurls at his enemy in a buzz saw-like form.
 * Gattling Attack (Gattling Missiles): He has twin missile launchers concealed under his chest plate that fire organic missiles in the form of fish. The missiles can open their mouths to reveal machine guns and appear to be capable of selecting and following their own targets, as shown in the anime when a missile knocked to the side changed its course and attacked a new target with out any verbal order from Andromon.
 * Grasp Hang
 * Weak Slap