SkullGreymon

SkullGreymon is a Digimon from the Digimon series. He is technically the first ever Ultimate Level Digimon owned by a DigiDestined. However, this Digimon was the result of Greymon Digivolving for the wrong reasons. This Digimon was uncontrollable and the only good that came from this was it showed the DigiDestined not to misuse the power of their crests. He later appeared in Season 2. His attacks are Dark Shot and Double Dark Shot.

Special evolution

 * DNA Digivolution (Mega) - SkullGreymon + Phelesmon = Chaosdramon

Attacks

 * Dark Shot: Fires the fish missile on his back.
 * Double Dark Shot: Fires 2 fish missiles. Ironically, it is weaker than Dark Shot.

Digimon Adventure
After the DigiDestined got their crests, Tai wanted Greymon to Digivolve to the next level and even stuffed Agumon full of food, so that he would evolve. When Etemon captured the kids in a colosseum and forced Greymon to battle one of his Greymon, Tai threw himself in front of the other Greymon to help his partner evolve. However this caused Greymon to Digivolve to SkullGreymon, which easily defeated the enemy Greymon. However it theno attacked Birdramon, Garurumon and Kabuterimon and finally fled the colosseum. Outside the exhausted Digimon reverted back to Koromon. The DigiDestined learned from this incident that they shouldn't force an evolution upon their Digimon.

Digimon 02
When the Digimon Emperor took over Greymon with a Dark Ring, he wanted him to Digivolve in MetalGreymon but he instead turned into SkullGreymon again and defeated Meramon, Flamedramon, Halsemon, Digmon and a bunch of DarkTyrannomon before reverting to Agumon as the Digimon Emperor made off with him. No matter how much he tried to get Greymon to Digivolve to MetalGreymon, he turned into SkullGreymon until Agumon's recapture and the introduction of the Dark Spiral turned Agumon into a Virus version of MetalGreymon.

Digimon Tamers
A SkullGreymon was among the many Digimon seen through the rip in the sky during Vikaralamon's rampage.

Digimon World
SkullGreymon lived in the basement in Dark Mansion. After being beaten he joined the Coloseum.

Digimon World Digital Card Battle
After taking the Dark Seven Card, SkullGreymon would appear outside Dark Mansion to fight the player. He belongs to the dark group and has 1550 HP, Circle attack 980, Triangle attack 350 and anti-nature Cross attack 450. After being beaten he never showed up again.