Summary

• The world of Invincible is filled with jaw-droppingly powerful characters, particularly among the Viltrumites.
• Omni-Man, while initially stronger than Invincible, is still outclassed by a few other Viltrumites in terms of power and strength.
• Thragg, the Grand Regent, is the strongest Viltrumite and one of the most powerful beings in the galaxy, continuously proving his might and even defeating Omni-Man.

One of the best parts of Invincible (by Robert Kirkman, Cory Walker, and Ryan Ottley) is the massive power levels of its characters. As the original comic series progressed, the titular hero, Mark Grayson, was forced to become much stronger in order to compete against the foes he faced. And he still flat-out failed, or just barely succeeded, on more than one occasion. Ultimately, the end result of all this was a chain of jaw-droppingly powerful characters with a hierarchy stretching to the skies.

The Viltrumites are a powerful species that represent the strongest characters in the series, including Invincible and his dad, Omni-Man. However, there are members of that alien race who are significantly stronger than the others. With the new Invincible TV show garnering a lot of attention, it's worth taking a closer look at the world of Invincible to break down who the strongest Viltrumites are.

Updated by Ajay Aravind on December 13, 2023: Although the Invincible comic series has long since concluded, the TV show might just last several seasons. The early release of a special episode called Invincible: Atom Eve had fans on the edge of their seats, and Season 2: Part 1 seems to have exceeded all expectations. Given the importance of Viltrumites in the story, we've updated this feature with some more information regarding the strongest Invincible characters.

Anissa Is One of Invincible's Most Terrifying Villains

As the cast of Viltrumites expanded, there had to be some who fell to the wayside as far less powerful than the main cast. Many of Thragg's half-Viltrumite children proved how fragile they were when they crumpled against full-blooded Viltrumites in battle, and even among the alien species' pure-blooded ranks, Omni-Man stood out as substantially more powerful than most of those he faced. However, one stood out even more thanks to her terrifying power: Anissa.

One of the strongest characters in Invincible, Anissa arrives on Earth to try and bring Mark in line with the Viltrumite Empire. Later, during the Viltrumite War, she proves capable of going toe-to-toe with Omni-Man. She would stick around through most of the series, although she was rarely seen being pushed to her limit. Overpowering Invincible and forcing herself on him in the controversial Invincible #110, Anissa's heinous act established her as one of the most chilling villains in the series. Given how Invincible's powers were fully developed by that point, it's hard to deny that Anissa ranks among the top tier of her species.

Omni-Man Was Initially Stronger Than Invincible

One of the strongest Invincible characters, Omni-Man was not the peaceful protector of Earth that he pretended to be, and the unbelievable destruction created by his battle with Invincible really sold that gut-punching revelation. The confrontation between father and son evolved into a brutal beatdown that instantly became part of comic book history. There was a substantial amount of power on display in that epic showing, with the very first punch thrown by the elder Grayson cracking skyscrapers apart and leaving thousands dead.

However, Omni-Man seems to be feeling guilty for his actions, as seen in Season 2: Part 1 when he tricks Mark into finding him on an alien planet. His subsequent fight with two overpowered enemies highlights his overwhelming strength. Omni-Man would only further establish his superiority to most Viltrumites throughout the series, sometimes taking on two or three at a time without relenting. For most of the series, he was much stronger and faster than Invincible, constantly providing a higher bar for his heroic son to reach. However, Omni-Man was still outclassed by a few other Viltrumites.

Conquest Nearly Killed Invincible During Their Duel

Although the Invincible comic certainly had its share of violence and gore prior to his arrival, there were perhaps no combatants more brutal and bloody than Conquest. With a scar across his face and an arm replaced by a robotic prosthetic, Conquest left no doubts about his battle-tested bona fides. Since he was only injured by the Scourge Virus and even older than the multi-thousand-year-old Omni-Man, Conquest was one of the most experienced characters in Invincible.

Given that he had never lost a planet in his thousands of years of life, there seemed to be little possibility of fighting off Conquest when he arrived on Earth. After nearly killing Invincible, Conquest was finally felled by Atom Eve when she went nuclear, her powers vaporizing half the conqueror. Even that wouldn't be the end of him — Conquest escaped the 400 tons of metal encased around him only days later and went on to have a rematch against Invincible that left the hero on the brink of death for months. Ultimately, Invincible outwitted Conquest and won their fight, but it was so narrow it easily could have gone the other way.

Invincible Clearly Surpassed His Father By the End

Invincible walked a long and bloody road, but there was no doubt that he earned his spot as one of the most powerful Viltrumites in the universe by the end of the series. At the start of the series, Omni-Man was able to slap Invincible around the globe without sustaining a single meaningful injury. That said, Invincible's powers grew over time, and he proved himself capable of fighting the best of the best among the Viltrumites as well as other villains. More importantly, Mark Grayson's relatively young age means that he has limitless potential, especially since Viltrumites live for thousands of years.

Various statements signify Invincible's growing power in comparison to Omni-Man's, and in the wake of his defeating the legendary Conquest, it was clear that Invincible had surpassed his father. Notably, Omni-Man did win their arm-wrestling match toward the end of the series, but there is some ambiguity surrounding Invincible's distraction during the scene and whether he intentionally lost. Regardless, the hero's raw showings make him one of Invincible's strongest characters — only one Viltrumite outranks him in terms of sheer physical power.

Thragg Is the Strongest Viltrumite in Invincible

Without question, Grand Regent Thragg is the strongest Viltrumite and one of the strongest Invincible characters. Claiming rule over all his people at the start of the series, the species' dogmatic philosophy of "might makes right" speaks to just how strong Thragg needed to be to maintain his position. Believing in that philosophy more stringently than anyone else, the incredibly powerful villain proved time and again why he's the strongest being in the galaxy.

Other Viltrumites could hurt their hands just punching him, and the Grand Regent fought Battle Beast for days despite starting the duel with severe injuries. On three different occasions, he beat Omni-Man nearly to death, maiming him with his bare hands while sustaining little damage himself. In the end, even Invincible could not take him down alone, and it was only with the combined efforts of Robot and other environmental factors that Thragg saw a thorough defeat for the very first time.