Marak Russen is from the plant Xanthu . When the ruling Tribune of Xanthu determined that Star Boy's departure from that planet left them at a loss, the planet's top geneticists were ordered to develop a new resident super-hero. They chose a former child actor and amateur athelte, Mark Russen, as the most likely candidate, one already known and popular who would be likely to survive the procedure. The Xanthian scientists hoped to recreate Star Boy's temporary super-powers by replicating the comet radiation that had once accidently given him abilities on the level of Superboy or Mon-El. The experiment proved unstable and gave Marak super-powers but not the super-powers he expected. Marak Russen renamed himself Atmos and was housed in high style and given the best promotion the Xanthian media could provide. His public appearance program and holovised battles so endeared him to the Xanthian people.Atmos then went on to join the Uncanny Amazers, a superhero group that protected the planet Xanthu, in the 30th century. Aside from the physical advantages he has from his inherent alien physiology he is a peak athlete. After the experimentation he was basically a human nuclear reactor. Atmos has a number of nuclear powers including super-human strength, flight and a special inhibitor field which gives him partial invulnerability to both physical and energy attacks  and the ability to survive exposure to interplanetary space without a transsuit. Atmos' suit also provides him with the ability to project nuclear bolts from his hands. These bolts can melt metals as well as metalliccompounds and generate an electro-magnetic field capable of disrupting electrical machines and what not.Atmos does not have any real training in hand-to-hand combat but does have a vast array of athletic training as well as an athletic physique.The BG was made by Ali Ries in 2009. The pose was borrowed and modified after Art Adams awesomeness.