Submarimon

Submarimon, the Guardian of Reliability (渦巻く誠実), is an Aquatic Digimon whose name is derived from "Submarine". It armor-digivolved through the power of the "Digi-Egg of Reliability". It has the "Water" attribute of that Digi-Egg, and those which don this Digi-Egg demonstrate their true might when underwater. It swims freely around the ocean, and as for the techniques which are unleashed during underwater battles, if the opponent is not a considerably aquatic Digimon, it will be unable to oppose them.

Digimon Digital Card Battle
The Submarimon card is #176 and is a Ice-type Partner card with 850 HP, 0 DP, and 0 DP bonus. Its special effect reduces the opponent's attack power to 0, and its support ability is "Discard two cards from opponent's Online Deck. Draw one card."

Digimon World 3
Submarimon can be summoned at any dock once the player obtains the Digi-Egg of Sincerity. Submarimon will ferry the player across the ocean between certain docks, but must be piloted along the correct path. However, Dolphmon, Gesomon, and Divermon will often attack Submarimon while it is swimming.

Digimon Accel: Ultimate Genome
Submarimon digivolves from any Rookie Digimon if it doesn't fulfill the requirements for any other Champion Digimon. Submarimon digivolves to Chirinmon if it has between 0 to 5 Dark DNA data, 11 to 15 Aquan DNA data, and 20 Holy DNA data; to Cerberumon if it has between 0 to 5 Holy DNA data, 6 to 10 Aquan DNA data, and 20 Dark DNA data; to Piximon if it has between 0 to 5 Dark DNA data, 6 to 10 Holy DNA data, and 20 Aquan DNA data; or to Deramon if it doesn't fulfill the requirements for any other Ultimate Digimon. Submarimon can also DNA digivolve to Cerberumon with Togemon.

Attacks
 * Oxygen Torpedo (Oxygen Homing): Discharges super-compressed oxygen.
 * Submarine Attack: Assumes a distance while underwater, then quickly rams the opponent while its nosetip drill is spinning.
 * Submarine Attack (Aqua Vulcan): Fires water beams at the opponent from his drill.