If your talking about when you have to get it to beat him to build the time machine I think I know how. You need to kill Dynal so comasso will go to the az. You can't do that with the vivosaur in your az because its stat will b to weak to do so. You shoud use your sz vivosaur to kill dynal (It woud be best if you did that part with a long range vivosaur0. After that Compasso with move to the az and since he is a support class vivosaur he should be easy to defeat.