Board Thread:MHX General Discussion/@comment-26836109-20151113203831/@comment-8897944-20151114172913

I think Gore still has frenzy virus and its mechainsm, it's just that we won't see Frenized/Apex monsters. Let's hope there better be an explination of why. My theory is the hunter (the character you make in MH4U) managed to stop the spreading frenzy virus, thus stopping the existence of the Frienzed/Apex monsters for all once, or uh..not forever, but might be temporarily.

Or just Gore Magalas isn't a part of the storyline in the MHX, but it came back due to its popularity. Shagaru may come back since the area where it can be fought is also in the game. The chances of its return is high but we'll see.