Octomon

Octomon is a fictional character from the Digimon franchise, a Champion Level Mollusk Digimon that resembles an octopus. It is the Digivolved form of Syakomon.

Evolution

 * Fresh (Baby I) - Pitimon
 * In-Training (Baby II) - Bukamon
 * Rookie (Child) - Syakomon
 * Champion (Adult) - Octomon

Special evolution

 * DNA Digivolution (Ultimate) - Octomon + Coelamon = Dragomon
 * DNA Digivolution (Ultimate) - Octomon + Dolphmon = Scorpiomon

Attacks

 * Spurting Ink Strike (Ocean Ink Gun): Shoots ink out of it's gun.
 * Insincerity 
 * Octopus Trap: Traps his enemys with his tentacles.

Digimon 02
The Syakomon belonging to the Poi Brothers, the DigiDestined of Hong Kong, Digivolved to Octomon to fight a Mojyamon.

Digimon Tamers
2 Octomon were among the Digimon seen through the rip in the sky during Vikaralamon's rampage.

V-Tamer
Octomon was one of Lord Marine's henchmen.