How do you get to kept x model. And 2 can you get the z model that the..

So sorry you cannot git model z but you can keep model x if you complete the game with both vent and aile. Oh one more thing I kno somthing just like model z called model ox it's way better has bout 7 abilities you have to use over drive to use those abilities (press A) you git him bye goin to area n and deafeating omega zero after wrds go to the room at the begginin of area N and at the bottom go all the way to the right and git the floatin rock beat the game and talk to fueve. If I need help bail me out like I helped you ight?

To get OX you need to be playing on normal or hard. If you beat Omega the Ancient Rock will appear in another area. Pick it up beat the game save the game to get a clear file and then show the rock to the old engineer. Tada. It has three elemental attacks, Zero's Ground Crush from X2, his Giga Attack from X4/5 , and his Giga from X6 when fully charged. You need to be using Overdrive to use these abilities but unlimited energy to do so.

Beat the game twice on normal or hard only. 1 file as vent and 1 as Aile. Then on your 3rd file you will be able to keep Model X. For the boss model Z from Omega you need to beat the final boss, travel to area N and beat the secret boss. Then go to the bottom room of N 1 with the 2 doors and grab the Mysterious Rock. Take it to Fleuve in the lab and he will give you Model Ox. (You can't take it into a new save). And sadly you cannot get Model W at all.