The post-credits scene of Venom gave audiences a look at Woody Harrelson's Cletus Kasady, a serial killer that comic book fans would recognize as the human alter ego of the villainous symbiote, Carnage. With the way that Sony is seemingly expanding the mythos of the symbiotes in its movies, it's possible that the studio is teasing the introduction of an even more powerful entity: Knull.

While Carnage is one of the most feared villains on Earth, Knull is one of the most dangerous entities in all of the Marvel Universe, on par with other cosmic beings like Ego the Living Planet and Thanos. Knull is a character that would be easy to adapt for both the Sony films and the MCU, and like Thanos, he could end up becoming the big bad that Sony/Marvel films will build up to.

RELATED: Venom 2 Set Photos Offer Better Look at Woody Harrelson's Cletus Kasady

WHO IS KNULL?

Marvel Comics' Knull smiling maliciously on his dark throne

Knull first appeared in Venom Vol 4 #3, introducing himself to Eddie Brock as the Lord of the Abyss and God of the Symbiotes. Like the Celestials, Knull's existence predates the entire Marvel universe. The creation of the universe by the Celestials enraged Knull, who up until that point, was dwelling in an endless void. Outraged that the "Light of Creation" was ruining his kingdom of darkness, he manifested the first symbiote, All-Black, as a sword and used it to decapitate a Celestial. Knull then manifested himself a symbiote suit before launching a campaign of terror against other cosmic divine beings.

He would later create a planet called Klyntar, also known as the Planet of the Symbiotes, to serve as a base of operations and manifested an army of alien creatures to help him on his mission. Knull's plans were finally put to a stop in the sixth century by none other than Thor himself. The God of Thunder struck a symbiote dragon named Grendel with divine lightning, cutting off Knull's connection with the vast majority of his creations. The symbiotes eventually found more noble hosts, leading to a rebellion and Knull being imprisoned at the heart of Klyntar.

RELATED: Venom 2: Tom Hardy And Woody Harrelson Share A Laugh In BTS Photo

VENOM 2: KNULL'S OTHER MOVIE TIES

In Venom, the titular character and the main villain, Riot, were both said to have been from a planet occupied by symbiotes -- a tease that could have been hinting towards Klyntar. While previous iterations of Venom seem to have a simpler backstory, the fact that Sony is already expanding on the audience's knowledge of the character by the idea of multiple symbiotes could mean that they may eventually have Eddie Brock interact with characters in his expanded mythos, such as Knull.

To add fuel to that theory, though the first Venom film was not directly tied to the MCU, a key piece of Knull's origin story exists within the universe. In the comics, it was revealed that the sword used by Knull to slay the Celestial was then tempered using its severed head to forge it with divine cosmic energies, molding it into the Necrosword. A certain severed Celestial head exists in the MCU in the form of Knowhere, a mining colony that was first introduced in the film Guardians Of The Galaxy. While the comic did not outright state that the decapitated Celestial became Knowhere, it's still a possible way for the studios to tie in Knull's origins to the greater MCU.

Speaking of which, Christian Bale was officially confirmed as the villainous Gorr the God Butcher for Thor: Love & Thunder. Gorr, of course, is the first known wielder of All-Black, and he used it to fight and almost defeat a multi-temporal corps of Thors. That being the nucleus of Knull's existence in the MCU is more than feasible, and at this point, could almost be expected.

RELATED: REPORT: Venom 2 in Talks With Tom Holland For Spider-Man Appearance

With the lines between Sony's universe and the MCU blurring, Knull could find his way to Marvel Studios' playground, leaving potential for him to come up against some of the franchise's best cosmic heroes including Captain Marvel, the Guardians of the Galaxy and Thor. The God of Thunder interacting with the diety would allow Marvel Studios to adapt his battle with the Grendel from the comics to the big screen. For now, though, Eddie Brock has enough problems on his hands as he is set to face Carnage in the upcoming Venom 2.

Directed by Andy Serkis and starring Tom Hardy as Eddie Brock, Venom 2 is currently scheduled for release on June 24, 2021, but that date may be further delayed.

KEEP READING: VIDEO: Venom 2 Will Give Woody Harrelson's Carnage a Major Makeover