Cerberusmon

Cerberumon is an Ultimate Level Demon Beast Digimon that almost resembles the Cerberus, nicknamed the "Infernal Watchdog" since he guards the entrance to the Dark Area. He's known as Cerberusmon in Bandai products.

Evolution

 * Baby I (Baby) - Paomon
 * Baby II (In-Training) - Shaomon
 * Child (Rookie) - Labramon
 * Adult (Champion) - Dobermon
 * Perfect (Ultimate) - Cerberumon
 * Ultimate (Mega) - Anubismon

Abilities
His Chrome Digizoid claws can tear through most things easily. He has a healing ability located in the wounds, the shoulder armo equips him with consciousness and his body armor can perceive attacks from all directions.

Attacks

 * Hell Fire/Emerald Blaze: Spews greenish flames from the mouth
 * Inferno Gate/Portals of Darkness: Create small empty portals that he pulls his enemies into where he has an advantage.

Digimon Frontier
As one of the first Digimon encountered under the influence of Cherubimon, he attacked Fire Terminal and absorbed the Fractal Code for Fire Town while looking for something called a spirit. When Takuya stumbled upon it while evading Cerberumon, he became Agunimon for the first time and battled him. Cerberumon had the advantage with the Portals of Darkness attack before being beaten and purified by Agunimon which reverted him to a Digi-Egg. Takuya used his D-Tector to release the Fractal Code which restored the village and the nearby area.
 * He is voiced by Steve Kramer in English and Fumihiko Tachiki in Japan.