Ajak possesses the conventional powers of the Eternals, including superhuman strength enabling him to lift 25 tons, complete control over the atoms of his body allowing him to regenerate after virtually any injury, the ability to project cosmic energy from his eyes or hands in the form of heat, light or concussive force, teleportation, flight at the speed of sound and the ability to rearrange the molecular structure of objects. Ajak is also a brilliant archaeologist and skilled wrestler
Ajak is a member of the Polar Eternals, a band of the near-immortal Eternals whose outpost lay within the Ural Mountains of Russia. Ajak’s earliest known interactions with humanity occurred in Babylon around 2500 BC when he was among the Eternals who clashed with the Deviants and their leader, Warlord Kro. Around 1200 BC, Ajak and his brother Arex were active in Greece where they were known respectively as Ajax the Greater and Ajax the Lesser. Around 1000 AD, Ajak interacted with the natives of South America where he assumed the identity of the Incan god Tecumotzin and the Aztec god Quetzalcoatl as he used the Eternals’ advanced knowledge to assist them. When the Celestials who created the Eternals and Deviants visited Peru around that time as part of their Third Host, Ajak performed the role of communicator with them, imparting messages from the Host to the Eternals, even delivering a warning from the Celestials to the gods of Earth. After the Third Host departed Ajak placed himself into suspended animation alongside a team of Eternals who were his assistants within the City of the Space Gods, which had been constructed in Peru for the Celestials’ use.
In recent years, Ajak and his men were awakened from their slumber by fellow Eternal Ikaris just in time to greet the Fourth Host of the Celestials. Ajak once again served as communicator and befriended the human archaeologist Dr. Daniel Damian, revealing many of the secrets of the City of the Space Gods to him. The Celestials ultimately judged in Earth’s favor and departed. Soon after, Ajak was among the party of Eternals who assumed the form of the psychic Uni-Mind entity to explore other worlds. Ajak eventually returned to the City of the Space Gods, but while he was away Damian’s daughter Margo had been slain by the Deviants. Blaming the Eternals and Deviants for her death, Damian used Celestial technology to transform Ajak into a monster and sent him to slay Deborah and Thomas Ritter, the offspring of Kro and Thena. Although the children were saved and Ajak was returned to normal, he had killed other children in his hunt and was haunted by their deaths and the betrayal of Damian. Ajak chose to disintegrate himself, destroying Damian in the process.
Ajak was later resurrected through unknown means but had become amnesiac due to the manipulations of Sprite, a young Eternal who sought to become mortal. In doing so, Sprite awoke the Dreaming Celestial, a seemingly malevolent Celestial who had lain dormant on Earth for thousands of years. Ajak was cast into the role of a gardener until the Eternals’ leader Zuras restored him. Zuras then had Ajak hire a pair of Deviants to assault Ikaris in order to restore his memory. The awakened Dreaming Celestial chose to communicate through the Eternal Makkari, slighting Ajak. At the same time, Ajak was asked by the Aztec, Incan and Mayan gods to represent them as part of the so-called “God Squad” assembled by the Olympian goddess Athena. Led by Hercules, the God Squad was dispatched to confront the gods of the extraterrestrial Skrulls, as the Skrulls were in the process of invading the Earth. During the battle against the gods Kly’bn and Sl’gur’t, Ajak was mortally wounded but regenerated from his injuries. Returning to the Eternals, Ajak revived the memories of the Forgotten One and sent him to attack Olympia and kill Makkari so that he could have revenge; Ajak nearly doomed the Earth by upsetting the Dreaming Celestial, but Sersi restored Makkari to life.