MegaSeadramon X is an Aquatic Digimon and a carrier of the X-Antibody. Having survived in the intensely competitive Net Ocean since ancient times, Mega Seadramon, who is called the king of the Seadramon-species, appears with that body color having outlived others in every region of the Net Ocean, from ice-bound seas to tropical waters. By repeatedly using its Special Move "Thunder Javelin" in countless battles, the blade on its calvaria has been well-tempered and honed, and its conductivity has also increased.[2]


  • Lightning Javelin (Thunder Javelin): A powerful lightning strike fired from the blade on its calvaria. There is a generator device equipped in the carapace on its head so that it can enable this Special Move.
  • King Javelin: Thrusts its blade into the enemy and tears them to pieces.
  • Maelstrom: Creates an electrified tornado.


MegaSeadramon X is based on sea serpent.


MegaSeadramon (X-Antibody) (メガシードラモン(X抗体))

Official romanization given by the Digimon Reference Book and used in Japanese media. Some media format the "(X-Antibody)" without parentheses[3] or leave it out entirely.[4]

MegaSeadramon X (メガシードラモンX)

Name used in Digimon Collectors.


Digimon D-Cyber[]

Notes and references[]