Gulus Gammamon

=Attack Techniques= undefined

=Evolution=

Evolves From

 * Any Purple Lv.3 Digimon from the Digimon Card Game
 * Gammamon

Evolves To

 * Any Digimon that also Evolves from Purple Lv.4 Digimon from the Digimon Card Game
 * Any Purple Lv.5 Digimon from the Digimon Card Game
 * Canoweissmon
 * Chimairamon
 * Dorbickmon (with or without certain Digimon from the Digimon Card Game)
 * Fumamon
 * Ghilliedhumon
 * Regulusmon
 * Vamdemon

=Appearances=

Gulus Gammamon is the partner of Amanokawa Hiro. A large shadowy form of Gulus Gammamon later appears in Episode 1, when Clockmon uses  on Gammamon, his appearance frightens and distracts Clockmon long enough for Amanokawa Hiro to save Gammamon from the attack.

Gulus Gammamon makes his first real appearance in "Executioner" after Bokomon's death by the hands of Sealsdramon pushes Gammamon into a Dark Evolution. Gulus Gammamon is considered psychotic and cruel in contrast to Gammamon. After ruthlessly killing Sealsdramon with, he tries to attack Hiro and the others. His memories of Bokomon stop him, making him revert to Child level.

Gulus Gammamon reappeared after Gammamon evolves again when Hiro was in danger and killed Archnemon with his. Before Hiro could talk with him, Gulus Gammamon calmly told Hiro to stay back and that it's not time yet before devolving back into Gammamon.

Gulus Gammamon reappeared again after Gammamon forced himself to evolve in order to kill the king Oboromon and depowering its companions before Hiro stopped him. Gulus Gammamon commends Hiro for not faltering and devolves back to Gammamon. It is here that his title of the "Jet-Black Tyrant" was revealed.

He is indirectly mentioned in, after Lilithmon observes Gammamon's eyes and realizes his existence. When Siriusmon refuses her offer to join her, she muses that his other side might feel differently.

Gulus Gammamon reappeared once more after Tonosama Gekomon mercilessly assaulted Gammamon and triggered his evolution. He turned the tables against the Perfect Digimon before threatening to kill him, Kiyoshiro and the humans absorbed into Tonosama Gekomon's back if Hiro didn't sync with Gulus Gammamon. Gekomon used his to free Kiyoshiro and the humans, angering Gulus Gammamon, but Hiro stopped him from killing Gekomon. He shrugged it off and stated that their time to sync will come before devolving back into Gammamon.

Gulus Gammamon's consciouness managed to speak to his alter ego Siriusmon as the latter was losing against a corrupted Rafflesimon, persuading him to do everything he can to save Hiro and his friends, which resulted in Gulus Gammamon to take control of his alter ego as they were absorbed by Rafflesimon, resulting in her death after expelling Siriusmon, Hiro, Ruli, Symbare Angoramon, Kiyoshiro, Tesla Jellymon, Hover Espimon, and all the Digimon Rafflesimon absorbed, including Saberdramon, due to Gulus Gammamon attacking Rafflesimon from the inside.

Gulus Gammamon reappears in the following episode, finally making contact with Gammamon, plunging him into despair and taking control. Bloom Lordmon realized that Gulus Gammamon is the source of the corruption of the Digital World, which the latter confirmed and revealed the corruption to be the Gulus Realm Burst (GRB), which forces the infected Digimon's fighting instincts to take over. Gulus Gammamon then revealed he left drops of the GRB all over the Digital World as Gammamon traveled with Hokuto Amanokawa before declaring that the time has come and evolving into Regulusmon.

Individual Appearances
{{AppearanceList|

Digimon Ghost Game
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TCG
=Image Gallery=

Virtual Pets
=Additional Information=