MarineDevimon

MarineDevimon is a Sea Animal Digimon whose name and design are derived from "Marine Devimon", though it is also a pun on "devilfish", an archaic term for the octopus. It is an aquatic dirty fighter that even Devimon hates to fight, due to its brutal reputation, and though it is a subspecies of Devimon, it completely lacks all emotions but hatred due to its lonely life in the profound ocean depths. For that reason, to ensure that it wins by any means, it won't let up with its attacks even if the opponent loses their fighting spirit. The two big tentacles growing from its back appear large and special, but they each possess their own will, so they will struggle for the catch and act without permission.

Digimon Xros Wars
A bunch of MarineDevimon make up Olegmon's pirate crew.

Digimon World 2
MarineDevimon digivolves from Gesomon, and can digivolve to Pukumon.

Digimon World 3
MarineDevimon is a random foe in Amaterasu Seabed heading all passages except for heading North Section. The MarineDevimon card is a Black Champion card with 15/15 stats.

Digimon World 4
MarineDevimon is seen in Vein and Diaboromon's base in Venom Jungle. He usually jumps out of a pond.

Digimon World Dawn/Dusk
MarineDevimon Digivolves from IceDevimon. He can also be found in Macro Sea

D-Ark 1.0
MarineDevimon is a wild Digimon with 12 HP and 3 AP. It is #37 in the D-Ark Notes, and its code is -543. It appears as the boss of Area 5, and as an enemy in Secret C.

DigiWindow
Attacks
 * Dark Deluge (Guilty Black): Discharges a venomous ink from its mouth which makes the opponent unable to stand for a while.
 * Evil Wing (しめつけ)
 * Neck Hanging