Originally adventurer Rex Mason, he is converted into a man made of a shifting mass of chemicals after being cursed by an ancient artifact that he has retrieved.

Anthony Carrigan is set to portray the character in the DC Universe (DCU), beginning with the upcoming film Superman (2025).

"[2]Metamorpho's creator, Bob Haney, had seen success with DC Comics in 1964 with the titles Metal Men and Doom Patrol, featuring bands of superheroes exhibiting fantastic powers.

Under the editorial management of George Kashdan, Haney was asked to capitalize on these titles' popularity with a similar character.

Metamorpho also appeared in two issues of Justice League of America (#42 and #44), but did not join the eponymous group and became a reserve member.

Metamorpho appears on the cover of Aquaman #30 as one of the pallbearers (along with Batman, Hawkman, and Superman) at the "Sea King's Funeral".

In 2005, DC Comics reprinted Metamorpho's early The Brave and the Bold appearances and the entirety of the 1965 series as one of the company's volumes of Showcase Presents.

As part of Wednesday Comics, Neil Gaiman wrote a 12-page Metamorpho story that Mike Allred illustrated.

[9] In 2016, Metamorpho starred in the anthology series Legends of Tomorrow alongside Firestorm, Sugar and Spike, and the Metal Men.

In an Egyptian pyramid, Mason is knocked unconscious by Simon's brutish bodyguard Java and is eventually exposed to a radioactive meteorite from which the Orb of Ra was fashioned, transforming him into Metamorpho, the Element Man.

Green Lantern attempts to change him back using his power ring, but is stopped by a "yellow" component of the meteorite radiation.

Metamorpho briefly has a crimefighting partner named Urania "Rainie" Blackwell, a woman who deliberately exposed herself to the Orb to gain its powers.

[16] Issues #16–17 were intended to show a new direction for the series, with Sapphire marrying a man named Wally Bannister and Metamorpho joining a mysterious Mr.

When Wally Bannister is murdered by Algon (a metamorph who has lived for centuries in a depowered state), Metamorpho is framed.

Element Girl revives Metamorpho, and Algon, the real murderer, is killed by molten lava in an attempt to regain his burned-out powers.

It is revealed that Metamorpho had spent the period after the end of his own series immersed in a chemical bath concocted by Stagg in an attempt to cure his condition.

His League friends, Rocket Red and Animal Man, are at the site of the battle, but are being detained by Java.

Metamorpho hands the baby over to Simon, who immediately fears he will be affected like Java was moments before and die.

During his time with the team, while fighting the planet-smashing aliens called The Family, Metamorpho is hit by a powerful energy blast that destroys his body.

It is stated that Metamorpho was able to save the team by the same technique he previously used to rescue the Justice League during Hyperclan's attack.

[32] In Doomsday Clock, Metamorpho is featured on the news as an apparent example of the "Superman Theory", in which the government is thought to have been experimenting on humans to give them superpowers.

Metamorpho is temporarily returned to his human form, but chooses to be transformed again and becomes Stagg Industries' chief security officer.

Jimmy Olsen brainwashes an unstable Metamorpho into helping him spread anti-metahuman propaganda by threatening to kill his family.

As part of Olsen's plans, Metamorpho is forced to kill the Thinker and attack a LexCorp tower in Metropolis until he is stopped by J'onn J'onzz.