Zomom is an antagonist in the Sonic the Hedgehog series. He is a Zeti and a member of the Deadly Six. When Dr. Eggman came to the Lost Hex, Zomom and the other members of the Deadly Six were forced into serving the doctor due to the effects of the Cacophonic Conch. After Sonic the Hedgehog arrived and got rid of the conch, Zomom and the others rebelled against Eggman and took control of his forces. Afterwards, Zomom followed Zavok's plans to make him and the other Deadly Six stronger by using Eggman's Extractor, while destroying Earth, but was ultimately defeated by Sonic.
Many years prior to the events of Sonic Lost World, Zomom was brought into the Deadly Six when Master Zik formed the group.
Zomom and the Deadly Six met Dr. Eggman, who used a Cacophonic Conch to enslave them. Begrudgingly, Zomom would assist Eggman in his scheme for world domination by capturing Animals for an army of Badniks. Zomom later joined Eggman and the Deadly Six for a Badnik-making lesson where Eggman told how they would help him beat Sonic the Hedgehog, before he saw Zazz depart to fight Sonic.
Coming to Windy Hill, Zomom and his team met Sonic, before coming with Eggman as he left Zazz to finish Sonic. Resuming the Animal hunt, Zomom would be punished by Eggman with the Cacophonic Conch when Zavok spoke against Eggman's criticism of their efforts. Zomom was soon after persuaded with a sandwich from Eggman to go fight Sonic, only to get defeated. Zomom later had a snack when Sonic showed up and criticized his health habits. Fighting Sonic again, Zomom lost once more.
Zomom and the Deadly Six were soon after scolded again for their failures by Eggman with the Cacophonic Conch when Sonic appeared and knocked the conch away. Now free, Zomom and his team took control of Eggman's Badniks and had them attack everyone at the site, with Zomom joining an attack on Eggman, forcing Orbot, Cubot, Eggman, Sonic and Tails to flee. Afterwards, the Deadly Six took control of Eggman's operations on the Lost Hex. While Sonic still opposed them, Zomom was involuntarily used by Master Zik to demonstrate his physical prowess when he went after Sonic. As Zomom plotted his own revenge at Eggman, he went along with Zavok's plan to destroy the Earth with Eggman's Extractor and use the energies it harvested to make the Deadly Six stronger, thus getting his revenge at the doctor.
Zomom later helped set a trap to capture Sonic so the Deadly Six could turn him into their robotic slave, only to find Tails caught in it when it returned. As Zor then arrived to announce the failed capture of Sonic, Zomom scowled in response. Eventually, Zomom helped Zavok set up a Roboticizer to use on Tails. When he left device to itself however, he unknowingly left a sandwich behind which Tails used to stop the device. Using their Extractor-enhanced strength, Zomom and Zazz would later ambush Sonic and his allies, knocking everyone except Sonic into a lava pit. Zomom subsequently teamed up with Zazz and Master Zik to finish Sonic off, only to be beaten for good. What happened to Zomom afterward is unclear.
And he is reprised by Patrick Seitz in the English dub and Chafurin in the Japanese dub.