Urthona is a fictional character in the Marvel Universe

Marvel Universe

The Marvel Universe is the shared fictional universe where most comic book titles and other media published by Marvel Entertainment take place, including those featuring Marvel's most familiar characters, such as Spider-Man, the Hulk, the X-Men, and the Avengers.The Marvel Universe is further...

.

Fictional character biography

Urthona is an extra-dimensional sorcerer from another planet. He sought to become Sorcerer Supreme

Sorcerer Supreme

Sorcerer Supreme or Sorceress Supreme is a title granted in the fictional Marvel Universe to the "practitioner of the mystic or magic arts who has greater skills than all others or commands a greater portion of the ambient magical energies than any other organism on a given world or dimension". By...

 of the entire universe, and targeted Doctor Strange

Doctor Strange

Doctor Stephen Strange is a fictional character that appears in comic books published by Marvel Comics. The character was co-created by writer-editor Stan Lee and artist Steve Ditko, and first appeared in Strange Tales #110 ....

. Urthona gained possession of half of Topaz

Topaz (Marvel Comics)

Topaz is a fictional character, a sorceress in the Marvel Comics universe. She debuted in Werewolf By Night v. 1 #13 .-Fictional character biography:...

's soul, which allowed him to use the other half to learn everything he could about Strange. He sent one of his champions to battle Strange while he was away from his Sanctum Sanctorum

Sanctum Sanctorum

The Sanctum Sanctorum is a fictional building in the Marvel Universe. It first appeared with Doctor Strange in his debut in Strange Tales #110 .-Location:...

, and mystically transported the Sanctum to his planet, along with Wong

Wong (comics)

Wong is a fictional character in the Marvel Universe. He is the sidekick and manservant of Doctor Strange, the Sorcerer Supreme of Earth. Wong was first mentioned in the comic Strange Tales #110 and first appeared in Strange Tales #147. In the 2006 miniseries Dr. Strange: the Oath, it was revealed...

 and Topaz and all the mystical objects inside. Strange took on Rintrah as an apprentice, and took Urthona by surprise by travelling to his planet in a Skrull

Skrull

The Skrulls are a fictional race of extraterrestrial shapeshifters that appear in publications by Marvel Comics.-Publication history:The Skrulls first appeared in Fantastic Four #2 and were created by Stan Lee and Jack Kirby....

 spacecraft. Strange, inhabiting Rintrah's body, battled Urthona, and destroyed all of his mystic talismans to keep Urthona from possessing them. Strange was not able to destroy the Darkhold

Darkhold

The Darkhold, also known as The Book of Sins, is a fictional book in the Marvel Comics universe.-Publication history:The Darkhold was co-created by Gerry Conway and Mike Ploog. The Darkhold was first mentioned in Marvel Spotlight #3 but first shown in Marvel Spotlight #4...

, however, so Urthona fled with the book. Eventually, however, the Darkhold simply disappeared and returned to Earth.

Strange later confronted Urthona again, and banished him to a realm far removed from their universe.