Are there any Pokemon that I can't get between X, OR, and UM?

I have Pokemon X, Omega Ruby and Ultra Moon.So I want to know that are there any Pokemon without mythical that I can’t get in these games ? And what are they?

Pleaselog inorregisterto add a comment.

You can catch every Pokemon (upto gen6) between XY and ORASBut as only X and Omega Ruby are available, there will be some exclusives:- Yveltal-Phione-Dialga-(Giratina)(Giratina can technically be caught in OR but requires Dialga which is unavailable)(Thanks @sumwun for bringing it up)

The following Pokemon are only available if you have the friend safari for them :-Liepard/Purrloin-Spritzee/Aromatisse-Sawk

Pokemon Ultra Sun exclusives which cannot be covered by X,OR and UM:-Kartana-Buzzwole-Blacephalon-Turtonator-Passimian-Omanyte

There are some Pokemon which can only be acquired by choice. For example, you can only get either a Tyrunt or Amaura. If you choose Amaura in XY, Tyrunt will become unavailable to you - however if you chose Tyrunt you would be able to get Amaura through UM.Similar things apply to the Kanto starters you get in XY. This list does not take these Pokemon into account (as I don’t know which ones you’ve chosen) so there many be a few more unavailable to you.