Moridun was the Sorcerer Supreme of the Fifth Cosmos, the multiverse where magic and sorcery were first formed. It was prophesied that Moridun would see the end of the Fifth Cosmos and enter the Sixth as Omnimax, its iteration of the Devourer of Worlds. Eventually, his ghost would find its way to the Eighth as well.
At some point in his tenure as the Sorcerer Supreme, Moridun found the time-displaced Carlo Zota of the Eighth Cosmos and turned him into his slave, teaching him a variety of things, including magic. Later, he witnessed the arrival of the Defenders, who also hailed from the Eighth Cosmos. They accidentally ended up in the Fifth Cosmos after going back in time to defeat Zota in the Sixth.
Fearing the potential of the Defenders as a living spell, Moridun tried to enslave them. However, Doctor Strange redirected all of his magic to Harpy, causing her to summon a Green Door on top of Moridun, thus banishing him from there and thwarting his plan. He eventually made his way back.
After the Fifth Cosmos ceased to be, Moridun became Omnimax and entered the Sixth Cosmos as prophesied. He attacked Taa alongside his herald, Carlo Zota, but his attempt to devour the planet failed due to the Defenders' interference, forcing him to retreat. He also lost his herald in the process, as Zota fell into the timestream and ended up in the Fifth Cosmos, where Moridun's past self found him.
While Omnimax met his fate under unknown circumstances, it is possibly that his death was caused as a result of the Sixth Cosmos coming to an end at the hands of the Black Winter.
When the multiverse reached its eighth iteration, Moridun's spirit was summoned by the Maker (Reed Richards), who was at the time exploring the existence of the previous multiverses. Moridun vanished when the New Avengers disrupted the ritual being used to summon him, but the dark wizard remained on Prime Earth, unbeknownst to Richards.
As part of his plan to possess the powerful young hero Wiccan, Moridun used some information he had acquired from the Maker's mind about a prophecy followed by the Knights of the Infinite. The evil wizard killed the elder Knight M'ryn, and used his corpse as a vessel, attacking and absorbing the souls of other Knights.
Meanwhile, the rest of the Knights had kidnapped the Avenger Hulkling, and inadvertently Wiccan himself. When they arrived back to their base in the Forbidden Asteroids, they were confronted by Moridun. During the ensuing fight, Moridun managed to grasp Wiccan in his tentacles. After absorbing enough power, the evil wizard grew in size, destroying Castle Tarnala from the inside out. Hulkling and Wiccan's teammates, the New Avengers, joined the brawl against Moridun, to no avail. After accidentally absorbing an energy blast from Moridun with the ancient sword Excelsior, Hulkling realized he could use it against Moridun. The New Avengers distracted Moridun long enough to allow Hulkling to stab him in the face, seemingly killing the creature.
In reality, Moridun had already infected Wiccan and remained inside his mind as a sort of subconsciousness. The evil wizard's control over Wiccan, who began to go by the codename Demiurge under his influence, eventually grew stronger.
During a mission in Tokyo, Moridun detected the presence of a team of Avengers from XX years in the future, who had arrived to the present to stop Moridun from completely taking over Demiurge. This prompted Moridun to manipulate Demiurge into teleporting himself and his teammates back to Avengers Island, intending to confront the future Avengers. This led to a fight between the future Avengers and New Avengers over Demiurge's fate. Hulkling managed to reach out into Demiurge's mindspace and convince him to fight Moridun's control. Demiurge was successful in ridding himself of Moridun's possession, casting him out of his body in the physical form of a small squid.
Magic: Moridun is an ancient wizard from the fifth iteration of the universe, and has used his control over magical forces for different results.
- Energy Projection and Absorption: Moridun has been able to absorb photon blasts with ease, and use this energy to empower himself. He has also shot fire from the ends of his tentacles.
- Size Alteration: Moridun can use his powers to increase his size, to the point of being able to destroy a castle from the inside out.
- Superhuman Durability: Moridun can resist physical attacks from powerful beings like Pod without suffering any damage.
Possession: The wizard of the Fifth Cosmos is a parasite entity capable of possessing any living being.
Host Dependence: As an astral creature with no physical form, Moridun has to possess living beings, either by draining their power or implanting his essence in their minds.
- Moridun is inspired by the Cthulhu Mythos, with Al Ewing stating he's "got some very Cthulhu-y touches to him" and considering him "the definition of a 'great old one'" for being from a ghost of a previous incarnation of the universe.
- When asked if Moridun had any connection to the Cancerverse, New Avengers (Vol. 4) writer Al Ewing stated he had not considered one, but didn't discard the idea that Moridun could have created it as "it seems to fit in with his worldview," and he would have no objection to subsequent writers making that connection.
- 9 appearance(s) of Moridun (Earth-616)
- 2 mention(s) of Moridun (Earth-616)
- 7 image(s) of Moridun (Earth-616)
- 2 quotation(s) by or about Moridun (Earth-616)