User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-173.61.121.132-20111222000146/@comment-1758220-20111222031906

@The guy who said it was just an expansion:

Exactly. That's why he should be in here alongside the other P3rd monsters. He and his subspecies were present in a 3rd gen game, and therefore he should appear in the be-all-end-all 3rd gen game (3G).