Ikkakumon

Ikkakumon is one of the heroes in Digimon Adventure. He resembles a narwhal, walrus, and polar bear. It has thick fur and stout body and has a sharp horn made out of rare metal. His known attack is Harpoon Torpedo which shoots its regrow-able horn. He is the Champion form of Gomamon and can Digivolve to his Ultimate form Zudomon.