Gardner Fox recalled the initial inspiration for the character stating, "As I sat by the window I noticed a bird collecting twigs for a nest.

Upon finding the ancient knife Hath-Set used to kill him, Hall regains his memories of his past life and recognizes Hastor as the reincarnated evil priest.

[2] Hawkman becomes a charter member of the Justice Society of America and takes the position of permanent chairman, following the Flash and Green Lantern.

In 1942, Carter enlists in the U.S. Army Air Force as an Airman[3] and serves as a pilot with the 1st Interceptor Command during World War II.

All-Star Squadron Annual #3 states during a JSA battle against Ian Karkull, the villain imbues them with energy that retards their aging, allowing Hall and many others – as well as their spouses – to remain active into the late 20th century without infirmity.

Prince Khufu, Nabu, and Teth-Adam search the desert and find the remains of a Thanagarian ship styled with a hawk-like motif.

The remaining sample from the ship is melted and used to create several remarkable devices, including a scarab that allows Khufu to fly, a deadly knife, and a battle glove referred to as the Claw of Horus.

Years after they vanish, Hawkman and the JSA return to the early 21st century when a primitive but superpowered tribe volunteer to substitute themselves in the Ragnarök cycle.

He and his wife Shiera merge with Katar Hol and a "hawk god" creature in a new version of Hawkman, attributed to them being fundamentally unstable due to their complex origins as a result of the last Crisis.

Seeking a champion to stop the evil Onimar Synn from enslaving the planet, the priests use Kendra's centuries-old connection to Carter to bring him back to the mortal plane.

Kendra has no interest in renewing the relationship due to her lack of memories of their shared past, and the role as chairman of the JSA goes to Mister Terrific.

In a Hawkman Special published in August 2008, the mysterious being called Demiurge tells Carter Hall his previous existence as Prince Khufu is an illusion.

Hall briefly assists the Justice League during their battle with the Shadow Cabinet by knocking out Hardware as he tried to flee from the JLA Watchtower with Arthur Light's corpse.

As the two heroes quarrel, the reanimated corpses of Ralph and Sue Dibny, who are now members of the Black Lantern Corps, enter Hawkman's sanctuary.

[11] In the Brightest Day crossover event, Carter and Shiera follow Hath-Set, who has collected the bones from all of their past bodies, and created from them a portal to Hawkworld.

Carter refuses and the ring responds "So be it" and unleashes a blast of white light that kills Hawkman and Hawkgirl, turning them into dust.

[16] When the "Dark Avatar" makes his presence known, Hawkman and Hawkgirl are revealed to be part of the Elementals, guardians of the forest located in Star City.

They were transformed by the Entity to become the element of air and protect the Star City forest from the "Dark Avatar", which appears to be the Black Lantern version of the Swamp Thing.

He becomes aware of multiple incarnations of himself, which include Katar Hol, and has a vision of a future Earth that has destroyed by gigantic, winged creatures that are later revealed to be spaceships known as the Deathbringers.

He deduces his past selves knew the purpose of the visions of the Deathbringers and realized they were starting to forget, and therefore left the trail for their future incarnations.

Upon his death, Ktar is offered a chance to atone by endlessly reincarnating, only being allowed to finally pass on when he had saved as many people as he had killed.

They catch up to Sky Tyrant on an alien world where one of his previous incarnations named Titan Hawk has hidden an artifact known as "The Key", which would have released the Lord Beyond the Void.

Sky Tyrant escapes from his cell and brawls with the three heroes; he and Shayera touch the Key together and are transported to the realm of the Lord Beyond the Void.

The Lord easily overpowers them and binds them to a stone monolith, planning to absorb the energy from all of their lives, which will give him sufficient power to cross over into the universe.

The deity explains Ktar's debt is repaid and offers to allow them to be reincarnated a final time in their favourite lives, where they will be extremely long-lived but mortal.

Anton Hastor, an incarnation of the Hawks' ancient enemy Hath-Set, learns Prince Khufu and Chay-Ara have been reincarnated, and that they can be killed permanently.

Hastor steals his Nth Metal dagger from JSA headquarters and draws the Hawks out to a train, where he has killed the passengers and resurrected them as zombies.

Hall's Nth metal also enhances his strength and eyesight, speeds healing, and regulates body temperature, preventing the need for heavy protective clothing while flying at high altitudes.

Due to his multiple incarnations and having the memories of all of them, Khufu/Hall is an expert with a wide array of archaic weapons from his past lives, including battle axes, maces, swords, spears, and shields.

During the miniseries Identity Crisis, it is revealed the main reason for this animosity is the opposing views he and Green Arrow take on the mindwipe of Doctor Light.