Ryan Choi is the teaching assistant to the Ivy University professor Ray Palmer, better known in the superhero community as the size-altering scientist the Atom. In addition to his professional duties, Ryan became Dr. Palmer's confidant about his escapades as a superhero. Working together so closely, Ryan became just as proficient in Palmer's tech as the inventor himself. One day, when researching a collection of time-robberies, Palmer became trapped in a remote location and sent a single message to Ryan for help, asking him to don a Bio-Belt and lead the search to find him
