When it comes to superheroes, especially in Marvel, there is a lot of sibling rivalry, causing problems throughout its universe. In Marvel Comics, there have been siblings since Stan Lee and Jack Kirby created the very first superheroes in Marvel with the Human Torch and Invisible Girl in Fantastic Four #1.
Since that time, there have been several siblings in both heroes and villains, and they include some of the most powerful heroes in comic books. Here is a look at the 10 most powerful pairs of Marvel siblings based on the power level of the two combined.
10 10. WICCAN AND SPEED
Wiccan and Speed were not always siblings, nor do they even had the same actual parents. However, what makes them the siblings is the fact that they are the reincarnation of Scarlet Witch's children. As her children, they also have similar powers to Wanda and her sibling.
Wiccan has his mother's magical powers, as well as her inability to always control those powers. He remains one of the most powerful beings around but is still learning those powers. Speed has similar abilities to that of Quicksilver, although he also has the overconfidence of his "uncle," and that limits his strengths.
9 9. CAPTAIN BRITAIN AND PSYLOCKE
Captain Britain was created in 1976 as Britain's answer to Captain America. However, Brian Braddock had some serious powers, given to him by Merlin if he agreed to become Britain's next great champion. He chose the Amulet of Right and became Britain's leading hero.
Brian had a sister named Betsy who, at one time, took over his role as Captain Britain. However, unlike her brother, Betsy developed psychic powers and then changed when her consciousness transferred into the body of a Japanese mutant named Kwannon. It was at that time that Betsy became Psylocke, an Omega level mutant with the power of telekinesis.
8 8. INVISIBLE WOMAN AND HUMAN TORCH
The first siblings created for Marvel Comics was Johnny Storm and Susan Storm — The Human Torch and Invisible Girl. This relationship was necessary because the entire purpose of the Fantastic Four was to make them a family even more important than being a superhero team.
The Fantastic Four ended up with Reed Richards marrying Susan Storm to make the family even stronger. As for Sue and Johnny, their powers are more powerful than many people understand. Sue not only turns invisible but can create force fields and even take away oxygen from anyone. Human Torch can go supernova.
7 7. DAKEN AND X-23
Dake and X-23 are siblings since they both look at Wolverine as their father. Some might not consider them as such because X-23 was a clone, but since they are both Logan's offspring, they fit the role of siblings for this list.
As Logan's cloned child, X-23 possesses most of his mutant powers, including his super senses, claws and regenerative healing factor. Daken's parents were Wolverine and Itsu, and he has most of his father's abilities as well. Together, it is like fighting two Wolverine's, and that is never fun for the nemesis.
6 6. COLOSSUS AND MAGIK
Colossus was one of the new members of The X-Men when Professor X put together a new team to rescue his original X-Men from a sentient island. The big Russian had the power to turn his body into organic steel, making him one of the strongest characters in the Marvel Universe.
Illyana Rasputina is Colossus' little sister, and she developed her mutant powers after her brother had already left home to join the X-Men. Her powers were initially stepping discs where she could teleport. However, when she ended up in Limbo, she developed immense sorcery powers. There was one other sibling named Mikhail who could teleport and fire energy blasts.
5 5. THANOS AND STARFOX
This relationship was never even hinted at when Thanos appeared in the Marvel Cinematic Universe. While the movies presented a different set of siblings in Thanos' daughter's Nebula and Gamora, the case of Thanos and Starfox is actual blood relations.
Starfox is Eros, and he and Thanos are the children of Mentor of the Eternals. As Eternals, both are very powerful, but Eros is the weaker of the two has he never cared to master his powers. However, Thanos, by himself, moves this sibling pair to the upper part of this list, as the most powerful Titanian Eternal.
4 4. PROFESSOR X AND JUGGERNAUT
Much like Thanos and Starfox, only one member of this siblings duo makes them so overpowered. That is not to say that Juggernaut is not powerful, because he is. Unlike his brother, Charles Xavier, the Juggernaut is a powerhouse who gained powers through the Crimson Gem of Cyttorak.
However, Xavier is arguably the most powerful mutant on Earth. He is a telepath who can not only read minds, but control other people by taking control of their minds, wipe memories from anyone's mind, and make anyone believe anything he wants them to through mind manipulation.
3 3. CYCLOPS AND HAVOC (AND VULCAN)
The Summers family has a ton of members in the Marvel Universe who are very powerful. Just looking at siblings, Scott Summers is the most famous of the brothers as Cyclops, one of the original members of the X-Men. His leadership of the X-Men is almost as strong as his optic blasts.
As for his siblings, Havoc is the most famous. He is an alpha level mutant who can release devastating energy blasts. He has another brother, one who became a villain due to the actions of Professor X. This was Vulcan, who is an Omega level mutant that also can manipulate energy.
2 2. QUICKSILVER AND SCARLET WITCH
Quicksilver and Scarlet Witch were also two very early siblings introduced in Marvel Comics, and they have come a long way throughout the years. The duo was initially part of the Brotherhood of Evil Mutants, the children of Magneto. They then joined the Avengers and eventually went their separate ways, with Scarlet Witch as a hero and Quicksilver as an antihero.
As for their powers, Quicksilver is one of the fastest beings in the Marvel Universe. However, the Scarlet Witch is one of the most powerful characters in the entire Marvel Universe. She can manipulate realities and has changed the whole Marvel Universe in House of M and stripped almost every mutant of their powers after that.
1 1. THOR AND LOKI
The Avengers formed due to the threat of a rampaging Hulk. However, it wasn't Hulk that was the real villain, as he was controlled and manipulated by Loki, the Norse Trickster God. Of course, this brought in Thor to help stop his brother, and that formed The Avengers.
Thor and Loki are easily the most powerful siblings in the Marvel Universe due to both men having immense powers. Thor is the God of Thunder and one of the most powerful beings in Marvel. As for Loki, he is one of Marvel's most powerful sorcerers. Together, they are almost unstoppable.