Seol Hee was an aspiring singer hoping to use her voice and dancing skills to earn enough money to take care of her elderly grandmother, who has raised Seol since the tragic deaths of her parents. When the science-obsessed organization known as A.I.M. ambushed a Stark Industries event where Seol was performing, Seol bravely attempted to defend the attendees, resulting in A.I.M. soldiers locking her in a hi-tech storage freezer. While trying to escape, Seol was exposed to the contents of an advanced cold-fusion energy experiment, which unexpectedly granted her control over frozen elements. Using her newfound powers to fight back, Seol surprised and defeated the A.I.M. forces' attack. Dubbed "Luna Snow" by the press, Seol's heroic actions made her an overnight sensation, and she now uses her talents and powers as a part-time pop star and full-time Super Hero!

To celebrate this historic event, Netmarble will open a pre-registration event from January 12 to January 23 where players can sign up to learn more about this unique new character. By pre-registering, players will unlock in-game crystals and other rewards. The rewards increase in value as the total number of pre-registered players increases--so the more people that sign up, the more everyone gets rewarded!