Ronan the Accuser made his first appearance in Fantastic Four #65.
Ronan was born on the planet Hala, the capital of the Kree Empire in the Greater Magellanic Cloud. Ronan is a member of the alien Kree race and a member of the Accuser Corps, who are the Kree equivalent of military governors and jurists. His rise through the ranks was extraordinary, and he eventually became the third-most powerful being in the Kree Empire. The Supreme Intelligence appointed him "Supreme Accuser of the Kree Empire," and in this role he is known simply as "Ronan the Accuser".
Ronan is sent to Earth to investigate the defeat of the robotic Sentry-459 by the Fantastic Four. The team defeats Ronan, which prompts a Kree expedition to spy on and assess Earth. Captain Mar-Vell is a member of the team and he interacts with Ronan frequently during his mission.
Ronan secretly plans with Zarek to overthrow the Kree leader, the Supreme Intelligence, believing the Empire should not be ruled by a non-humanoid entity. Ronan is paralyzed by the psionic powers of Rick Jones, and control of the Kree Empire reverts to the Supreme Intelligence.
Ronan is mentally dominated by the Supreme Intelligence, and battles Mar-Vell on multiple occasions. Ronan later regains his sanity and returns to his former position as Supreme Accuser.During the second Kree-Skrull war, Ronan executes a Skrull duplicate of the Silver Surfer.
When Earth becomes a prison planet, Ronan serves as the warden of the planet, apparently subordinate to the Shi'ar, but this is revealed to be part of an elaborate trap by the Supreme Intelligence to subvert the galactic council and use Ego the Living Planet as a weapon. Although Ronan is able to elevate his power by tapping into Ego's own energy, he is defeated when Mister Fantastic, Iron Man, Giant-Man and Bruce Banner manage to devise a machine that transfers Ego's essence into Quasar, the weakened Ronan being defeated and captured by the U.S. Agent.
When Ronan is falsely accused of treason by Tana Nile, he discovers he has been framed by a highly placed member of a Kree house. After defending the Kree Empire against the Annihilation Wave, Ronan clears his name and kills his betrayer, although not before his accuser lobotomizes the Supreme Intelligence. In an act of mercy, Ronan kills the Supreme Intelligence and becomes ruler of the Kree Empire.
When the Inhumans seek aid from the Kree against the Skrull's Secret Invasion, Ronan agrees on the condition that the Inhuman princess, Crystal, become his bride. On their wedding day, he is severely beaten by the Shi'ar Imperial Guard and hospitalized. He does not fully recover until after the War of Kings is over.
During the war with the cancerverse, Ronan is a member of Nova's main attack force. In an effort to prevent further massive conflicts, Ronan joins the Annihilators. They protect Galador from the Dire Wraiths and oppose the Universal Church of Truth's attempt to revive the Magus.
Ronan the Accuser is separated from his wife Crystal under the orders of Black Bolt. This separation is part of a truce that was made between Black Bolt and the Supreme Intelligence to ensure peace between Inhumans and the Kree Empire. Crystal and Ronan are deeply saddened by this decision, their at first arranged marriage having strengthening their relationship.
During the Infinity storyline, Ronan the Accuser and the Supreme Intelligence appeared as members of the Galactic Council.
Powers and Abilities
Ronan possesses superhuman strength, endurance, speed and reflexes; which are enhanced by devices in his suit of full-body exoskeleton armor. Ronan also has devices in his armor which create fields of invisibility, and devices in his gauntlets which generate sufficient coldness to place certain life forms into a state of suspended animation. Ronan also possesses a weapon called the "Universal Weapon", a device which uses cosmic energy for a variety of effects according to the wielder's will, including the disintegration, rearrangement, and transmutation of matter, the projection of concussive energy blasts, the absorption of energy, control over gravity, the creation of force fields and "time-motion displacement fields" and interstellar teleportation along hyperspatial passages. Ronan is also a highly skilled soldier and a military genius, having received Kree military combat training, and possesses extensive knowledge of the legal code of the Kree Empire.
Lee Pace will portray Ronan the Accuser in the live-action film Guardians of the Galaxy on August 1, 2014.