Life in Atlantis

Kull was born in pre-cataclysmic Atlantis c. 100,000 BC, depicted as inhabited at the time by barbarian tribes. East of Atlantis lay the ancient continent of Thuria, of which the northwest portion is divided among several civilized kingdoms. The most powerful among these was Valusia; others included Commoria, Grondar, Kamelia, Thule, and Verulia. Note that the word "Thuria" never appears in any of the Kull stories. Howard coined the term while tying Kull's world to Conan's in the 1936 essay "The Hyborian Age".^[3]

Kull was born into a tribe settled in the Tiger Valley of Atlantis. Both the valley and tribe were destroyed by a flood while Kull was still a toddler, leaving the young Kull to live as a feral child for many years. Kull was captured by the Sea-Mountain tribe and eventually adopted by them. In "Exile of Atlantis", an adolescent Kull grants a woman a quick death so that she will not be burned to death by a mob. For this selfless act, Kull is exiled from Atlantis.

Slave, pirate, outlaw, and gladiator

Kull attempted to reach Thuria, but was instead captured by Lemurian Pirates. He spent a couple of years as a galley slave before regaining his freedom during a mutiny.

He tried the life of a pirate between his late adolescence and his early twenties. His fighting skills and courage allowed him to become captain of his own ship. Soon, Kull gained a fearsome reputation for himself in the seas surrounding Atlantis and Thuria. Kull lost his ship and crew in a naval battle off the coast of Valusia, but once again survived.

He settled in Valusia as an outlaw. However, his criminal career proved to be short-lived as he was soon captured by the Valusians and imprisoned in a dungeon. His captors offered him a choice: execution or service as a gladiator. He chose the latter. After proving to be an effective combatant and gaining fame in the arenas of the capital, a number of fans helped to regain his freedom.

Soldier of Valusia

Kull never left Valusia or returned to the life of an outlaw. Instead, he joined the Royal army as a mercenary, pursuing elevation through the ranks. In "The Curse of the Golden Skull" Kull, approaching his thirties, is recruited by King Borna of Valusia in a mission against the ambitious sorcerer Rotath of Lemuria. Kull proves to be an effective assassin.

Borna promoted Kull into the general command of his mercenary forces. Borna himself, however, had gained a reputation for his cruelty and despotism. There was discontent with Borna's rule among the nobility, leading eventually to a civil war. The mercenaries proved more loyal to Kull than any other leader, allowing him to become the leader of their revolt.

King of Valusia

Kull killed Borna and took the throne while he was still in his early thirties. In "The Shadow Kingdom", Kull has spent six months upon the Valusian throne and faces the first conspiracy against him.

The series continued with Kull finding that gaining the crown was easier than securing it. He faces several internal and external challenges throughout the series. The conspiring of his courtiers leaves Kull almost constantly threatened with loss of life and throne. The aging King is ever more aware of the Sword of Damocles that he inherited along with the crown.

"The Mirrors of Tuzun Thune" finds Kull becoming progressively more introspective. The former barbarian is left lost in contemplations of philosophy.

In the Conan the Barbarian story "Shadows of the Skull", it's revealed that Conan is a direct descendant of Kull. However, this story was not written by the original author of Kull, Robert E. Howard.

Brule

Brule the spear slayer, a pre-cataclysmic Pict, and friend to Kull. Despite the animosity between Picts and Atlanteans, Brule is a fast friend and advisor to Kull.

Tu

First Councillor Tu is a trusted administrator, but also a constant reminder of the tradition bound laws and customs of Valusia.

Ka-Nu

Ka-Nu (sometimes named Kananu), the Pictish Ambassador to Valusia and wise man, is responsible for the friendship between Kull and Brule despite the ancient enmity between Atlanteans and Picts.^[4]

Borna

The last king of Valusia, a cruel and tyrannical despot who was overthrown by Kull and his soldiers.

Thulsa Doom

Kull's mortal enemy is the sorcerer Thulsa Doom. Thulsa Doom is described by Howard in "The Cat and the Skull" as having a face "like a bare white skull, in whose eye sockets flamed livid fire". He is seemingly invulnerable, boasting after being trampled by one of Kull's comrades that he feels "only a slight coldness" when being injured and will only "pass to some other sphere when [his] time comes".

Comics

Kull has been adapted to comics by Marvel Comics with three series between 1971 and 1985.^[5] The first was drawn by Marie Severin and her brother John Severin. He also appeared several times in The Savage Sword of Conan series and other anthology books. Another graphic novel, Kull: The Vale of Shadow, was published in 1989.^[6]

In 2006, Dark Horse Comics bought the rights to use Kull. The first series, titled Kull, was based on "The Shadow Kingdom".^[7] As of 2012^[update], three mini-series were published, Kull, Kull: The Hate Witch, and Kull: The Cat and the Skull.^[5] Dark Horse also re-published the Marvel stories into two different Kull collections. The Marvel color comics were collected into five volumes titled The Chronicles of Kull, and the Marvel magazine format, black and white stories were collected into two volumes titled The Savage Sword of Kull.^[8] Additional reprints were published in Robert E. Howard's Savage Sword.

In 2017, IDW Publishing got the license and began publishing Kull Eternal, using "The Mirrors of Tuzun Thune" as a story foundation of Kull in a modern setting.^[5] The series was cancelled after the third issue.^[9]

Film

The 1997 film Kull the Conqueror starred Kevin Sorbo in the title role. The film was originally intended to be a Conan film and some elements of this remain.^[10][11] The story's basis and several names can be directly traced to the Conan story "The Hour of the Dragon".

The 1982 Conan the Barbarian film starring Arnold Schwarzenegger borrowed many elements from Howard's Kull stories. The main villain Thulsa Doom was from the Kull series, as was the serpent cult.^[12] Conan's early life as a slave and gladiator in the movie borrows heavily from Kull's origin story and only shares minor details with Conan's literary origins; Conan was never a slave or a gladiator in Howard's stories, and left Cimmeria of his own free will.

Namesakes in other works of fiction

Kull may have been the source of the name of King Kull, a Fawcett Comics supervillain and foe of Captain Marvel, later acquired by DC Comics.^{[citation needed]} This King Kull combines barbarian elements with the bizarre science-fiction elements common in Captain Marvel stories of the Golden Age of comic books.