Roxas ' personality significantly change across the series due to the fact that when first introduced , he appear with fake memories that make him believe he is a common teenager and spend most of his time with his friends . When learning that he is Sora 's Nobody and remembering his past , Roxas give up his existence so that Sora could continue existing , but still express happiness for his fate . During his time in the Organization , Roxas develop a calmed personality based on the experiences he have as a result of having no memories of a previous life unlike other Nobodies .