[2] Ultra was originally Earth spaceman Ace Arn, living in an unspecified future era when spaceflight is commonplace.

Because all four rays hit him at the same time, he is instead transformed into a combination of the four aliens, possessing superhuman strength, flight, and the ability to manipulate electricity and magnetism.

Ultra was one of Wizard Magazine's "Mort of the Month", a featurette showcasing comic characters considered low-quality.

Having apparently somehow traveled back in time to the present era, Ultra is one of the many space-faring heroes who aid Donna Troy in the fallout of the Rann-Thanagar War.

One of his most recent appearance is in the same Action Comics storyline, where he was held with other humanoid characters on Brainiac's ship, such as the Creature Commandos.

In The New 52, Ultra the Multi-Alien is re-established as the result of an experiment of Byth Rok, in which he combined the DNA of alien prisoners in an attempt to create the Slayer of Worlds.

Each of these parts grants him a different power: Ultra can generate electromagnetic charges by combining magnetokinesis and electrokinesis.

In American Comic Book Chronicles, John Wells writes: "Debuting in MIS #103, Ultra the Multi-Alien was undeniably different but not in ways that many readers thought were any good...