Zudomon is a Sea Animal Digimon whose name is derived from the onomatopoeia for a hammer thud (ずどん Zudon?), and whose design is derived from the walrus. Ikkakumon digivolved further, and as a Power Digimon it became able to walk on two legs. It further guards its thoroughly tempered muscles with protectors, which it made from the pelt and shell that it stole from its opponents. The horn on its head has been replaced with one that became impossible to regrow, so it voluntarily processed it into a saw shape. However, after all is said and done its strongest weapon, which it dug up from ancient ice, is its "Thor's Hammer" (Thor Hammer) made of Chrondigizoit.
In Ultima, Joe's Gomamon was kindapped and forcibly cloned many times to create a swarm of Gomamon. The Gomamon clones were then forcibly digivolved into Zudomon and implanted with Dark Spirals to place them under the control of the Organization. Zudomon currently serve as Heavy Unit Lieutenants in the Digimon Minion Army of the Org.
Zudomon units usually digivolve from Archelomon, Depthmon, Dolphmon, and Ikkakumon units, and will digivolve further into the fearsome Vikemon and Plesiomon units.
Vulcan's Hammer (Hammer Spark): Strikes the opponent with the shock wave and sparks produced when it swings down its Thor's Hammer.
Horn & Tusk
Vulcan's Hammer (Hammer Boomerang): Throws its hammer like a boomerang.