(アルカディモン究極体 Arkadimon Ultimate)
|Debut||Digimon Adventure V-Tamer 01,|
"Earthquake! Demon Castle!!" 
|Prior forms||Arcadiamon (Ultimate)|
|Next forms||Arcadiamon (Ultra)|
Arcadiamon (Mega) is a Bewitching Beast Digimon. It is a cursed Digimon artificially created based on the data of various Digimon. Its nature is to evolve by absorbing its opponent's data, but it is unclear if it possesses any sense of self. Because these details are unknown, it is currently being investigated, but it's thought that Arcadiamon's existence is the greatest threat to the Digital World, and must never be.
- Dot Matrix: An invisible attack that uses a lot of energy, but takes a chunk of the opponent's data restoring itself while doing damage.
- Exile Spear: Its arm is transformed into a spear which is used to impale an opponent.
Arcadiamon (In-Training)'s design came from combining a "slimy, gross feeling" with a crustacean. The rest of its evolutionary line was created using the same two ideas as well. Arcadiamon (Mega) was designed by Ten'ya Yabuno.
Arcadiamon's design may also come from the concept of the archdevil, as well as a play on the programming term.
- Arkadimon Ultimate (アルカディモン究極体)
- Arcadiamon Mega
Name used in American English media. Some media leave out the "Mega".
Digimon Adventure V-Tamer 01
Digimon Xros Wars (manga)
Arkadimon (Mega) digivolves from Arkadimon (Ultimate).
Digimon Story: Cyber Sleuth - Hacker's Memory
Arcadiamon (Mega) is #218 and is a Dark Virus Type, Mega level Digimon and uses 20 memory. It digivolves from Arcadiamon (Ultimate), Infermon and Myotismon and can digivolve to Arcadiamon (Ultra). Its special attack is Dot Matrix and its support skill is Utopia which reduces chance of Instant Death by 50% and increases the chance to critical hit by 10%.