In the prequel Kingdom Hearts 358/2 Days, Roxas is a member of Organization XIII. He does not have memories of his previous life, but easily makes friends with Axel, the one in charge of watching over him. He also befriended Xion before falling into a month-long coma as a result of Naminé’s restoration of Sora's memory. It was only when Roxas awoke that he began to question the Organization’s motives.
I really love this cosplay and those awesome keyblades! I wonder if the cosplayer handmade them? Thanks to Beatrice for sending this in!