Airwalker (Earth-4126)

"I control the very air you breathe. I only keep you alive because Ronan has requested to kill you all himself."

-Airwalker

Before Creation
Before the Destroyers of the Universe were created, their founder, Ronan was battling his arch-nemesis, Quasar, and her team of superheroes, the Guardians of the Galaxy. They had taken their battle to an abandoned ship, formerly controlled by the alien race known as the Celestials.

Creation
After temporarily getting away from the Guardians, Ronan entered something the Celestials called the Room of Creation. he quickly hacked into their systems and used their extremely advanced technology to create the Destroyers of the Universe, one warrior for each element: Firelord, Airwalker, Plasma, and Terrax. Now under the control of Ronan, these new four villains went off to destroy the Guardians.

Vs. the Guardians
Each member of the Destroyers took on a different Guardian. Airwalker was battled by the dog Cosmo and the tree, Groot. He believed the two of them were unworthy for such a battle against Airwalker, so he easily took away the air Cosmo needed to breathe, and he was easily able to take out Groot. He was about to assist Plasma against Deception, but Firelord accidentally set the ship to blow, so the two teams each escaped, but they were separated.

Death
Airwalker was able to tap into each member's breathing patterns, he was able to trace them to the Deta Nebula, a very infamous void in the vacuum of space, known for the various disappearances. When the two teams battled, Airwalker was battling Gamora, however, she stabbed him in the chest, which greatly weakened him. He would have survived, had Quasar not created an energy sword the sliced him in half, which also led to the death of Firelord.