The game Chrono Trigger is verification that the characters exist and are notable. Undue weight refers primarily to differing viewpoints. The statement in WP:WEIGHT, "An article should not give undue weight to any aspects of the subject, but should strive to treat each aspect with a weight appropriate to its significance to the subject." does not mean that articles cannot be split off. WP:WEIGHT also says "Minority views can receive attention on pages specifically devoted to them." It is not "undue weight" to split larger articles into several separate articles. And I really don't care about WP:FICT says — the whole thing is disputed. I think you need to realize that the people who are most willing to put time into improving an article (and do it for free) are fans. I don't care about your opinion of what is "necessary."