User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-4697011-20140920210649/@comment-23230538-20140922003741

I think there's a very good chance that we haven't seen a few monsters yet on 4U. With 4, we had no idea about the inclusion of deviljho, rajang, kirin sub, brachydios, red tigrex and more into the game until we started seeing videos of them posted on youtube after the game came out.

Personally I think these monsters are in it and they just haven't shown them for one reason or another:

White Fatalis, White Monoblos, Daren Morhan Sub.

I also think that several returning mosnters from the second Gen would fit in nicely:

Both Blangonga's, all three Naga's, Shogun Cenotaur, Shen Gaoren and maybe Amatsu.

I was absolutely floored when I saw Chemeleos announced, I really had no idea he would be returning. Anything can happen now, I'm certain of that.