User blog comment:Lord Loss/Monster Hunter Frontier G 2 Discussion/@comment-6050823-20130809003005/@comment-6050823-20130810010848

Well I just found afew things about the World's End Monster and the Unknown.

World's End Monster: Turns out back in G1 it was going to be released in September and it seems it may still be put in September. Also it may control Hikari(Fire+Thunder) and like you said Art, it does appear in GR7.

Unknown Dyuragaua: It seems it maybe the monster that controls Honoo(Fire+Dragon) and it also appears in GR7. Like the Unknown, it seems it'll also be appearing in August. Also the last and kinda interesting thing, it seems there maybe two different versions of it for different quests, what I mean is it may have a variant of itself for different quests.