User blog comment:Kogath/Monster Hunter XX Discussion/@comment-27120688-20170109045223/@comment-26532315-20170109133816

Gravios is most certainly returning, as there never was a game without Gravios but with Basarios.

Lunastra? Could be, but I highly doubt it, same with Gigginox. Given the return of Congalala, Qurupeco doesn't seem so far fetched, as well as Monoblos. Shen Gaoren is another highly possible candidate, as we have the carcass and Lao Shan. It could be possible that some Rare Species get to return, but I wouldn't be surprised if they didn't, as Silverlos and Goldian seem to have only returned for that "last-village-quest's" sake (and to toast unexperienced Hunters as Hypers).

Frontier Monsters will be transferred the day I'll visit frozen hell.