Gesomon

Gesomon is a Mollusk Digimon. It has the shape of a squid and inhabits the depths of the Net Ocean. Although it is feared as the "White Demon of the Depths", it is highly intelligent and will not harm Digimon outside of its territory. However, if they seem to cross into its territory even for a moment, it will attack them like a fierce, raging god. For its attack style it specializes in "Hit and Away", in which it inflicts a single blow and then immediately withdraws.

Attacks
 * Coral Crusher (Devil Bashing): Unleashes a barrage of attacks that capitalizes on its many legs.
 * Coral Crusher (Deadly Shade) Attacks with a powerful squid ink that will completely numb the opponent's vision for a long time if they get hit by it.
 * Knight's Dome (Squire Dome)

Etymologies
Official romanization given by the Digimon Reference Book and used in the franchise.
 * Gesomon (ゲソモン)
 * (Ja:) Geso (下足).

Digimon Adventure
A Gesomon attacked the kids shortly after they returned from the Digital World and were heading home. He was a servant of Myotismon dispatched to search the waterways around the area where the Eighth Child was thought to live in. Gomamon digivolved to Ikkakumon in order to fight and destroy him after a short exchange of blows.

Digimon Adventure 02
Two Gesomon were seen during the Post-Christmas Invasion. The first was seen in a newsflash at the very beginning, attacking a ship with an Ebidramon. Later, when Joe, Cody and their partners travelled to Australia, a Gesomon, an Ebidramon, and a Shellmon attacked Derek, a local DigiDestined. All three champions were driven off by the references to them as seafood by Ikkakumon, Crabmon and Armadillomon. Upon Scorpiomon's defeat, they were herded by the other Australian Digi-Destined and sent back to the Digital World.

Digimon Tamers
When Vikaralamon caused a rip in the sky in which many digimon silhouettes were visible, a Gesomon was amongst them.

Digimon Frontier
A Gesomon had its fractal code absorbed by the mass murderer in the past.

Digimon Adventure V-Tamer 01
When Zeromaru and Taichi went to retrieve the Water Tag, they had to defeat Lord MarineDevimon's two minions, one of which was a Gesomon.

Digimon World 2
Gesomon digivolves from Syakomon and can further digivolve to MarineDevimon or WaruSeadramon depending on its DP. It also appears as boss along with Kuwagamon and Octomon in Web Domain. It can also be found in the wild with Vademon and Octomon. Its attack, "Coral Crusher", reduces quickness (speed) on one target.

Digimon World 3
Gesomon in found in Asuka Central Sector, to be exact at the stairs heading to the seabed right next to the door which leads in Asuka City.

Digimon Digital Card Battle
The Gesomon card is #051 and is a Champion level Ice-type card with 1030 HP, needing 30 DP to digivolve into, and worth 10 DP in the DP Slot. Its attacks are:
 * "Coral Crusher": inflicts 400 damage.
 * "Evil Punch": inflicts 250 damage.
 * "Knight's Dome": inflicts 160 damage, and sets the opponent's attack to 0.

It has no support effect.

Digimon World Dawn/Dusk
Gesomon is #156, and is a Champion-level, Attacker-class, Aquan-species Digimon with a resistance to the Water element and weakness to the Steel element. Its basic stats are 154 HP, 176 MP, 91 Attack, 92 Defense, 77 Spirit, 83 Speed, and 58 Aptitude. It possesses the Psychic 3 and Antidote 2 traits.

It dwells in the Proxy Island.

Gesomon digivolves from Betamon. In order to digivolve to Gesomon, your Digimon must be at least level 21, with 550 Aquan experience and 95 attack.

Gesomon can DNA digivolve to Dragomon with Octomon, or to MarineDevimon with Vilemon.

Digimon Story: Super Xros Wars Blue and Red
Gesomon can DigiFuse to MarineDevimon with IceDevimon and Numemon or to MegaSeadramon with Seadramon and Shellmon.

Digimon World Championship
Gesomon digivolves from Otamamon and Gizamon can digivolve to MegaSeadramon with 8 battles, or to Dragomon or Vademon. It can be found in Wave Coast.

Digimon Masters
Gesomon digivolves from Syakomon and can digivolve to MarineDevimon.

Digimon Heroes!
Gesomon can digivolve to MarinDevimon.

Digimon Soul Chaser
Gesomon digivolves from Syakomon and can digivolve to MarineDevimon.