She was first shown when Novick introduced Dan to the rest of the group. She along with Michael and Gyetang forfeited when Novick challenged all of them and watched as Novick quickly defeated Dan, then was quickly defeated by Ran. She then listened with the others as Khun revealed his plans and warned them against Rachel.
Apple calmly informed Dan that FUG hired her and Michael to kill Khun. Apple said it would be best to kill Dan since he knew their secret but Rachel suggested that he act as her legs. She then watched as Rachel maniacally stabbed Dan's legs after the latter scathing retort to her request.
After sneaking in the Last Station with Michael, they tried to communicate with Rachel but she failed to get a response. She was worried that their plan failed, but Michael said they have a powerful secret weapon at least.
Powers and Abilities
Her powers and abilities are unknown as of now. It is natural that she is a highly accomplished Scout to be recruited into Khun's Team. She can also act as a Light Bearer and controls at least two Lighthouses and a keyboard, all of which are red.