Tricephalous is a three-headed creature who was created on Monster Island by the
Deviants under the command of
Kro. When Monster Island is attacked by Monster Hunters, Kro has Tricephalous attack while Kro escapes. Though much of Monster Island is destroyed, Tricephalous became a servant of the
Mole Man. When the
Fantastic Four arrive on Monster Island, Tricephalous tries to stop them. However, it is caught off guard and defeated. A
Skrull named De'Lila arrives looking for the Inorganic Technodrome and takes over Tricephalous and the other monsters, causing them to go on a rampage. When De'Lila is defeated, Tricephalous and the other monsters return to Monster Island with the
Punisher on their trail. However, he abandons the chase after seeing the Fantastic Four. To prevent the Fantastic Four from preventing him in his plan to create a pocket dimension,
Aron summons Mole Man,
Giganto, and Tricephalous to fight them.
Thing defeats Tricephalous by grabbing his necks and throwing him into
Super-Skrull. Mole Man later sends Tricephalous and the other monsters to attack
Manhattan. The Fantastic Four halt their attack by using
Pym Particles to shrink the monsters, causing them to retreat. In
The Immortal Hulk (2020),
Roxxon acquires Tricephalous and uses it to wreak havoc in Arizona. However, Tricephalous is driven off by
Rick Jones, who destroys its middle head. ==Powers and abilities==