Quote Originally Posted by g346007_1906957 View Post
7% is not recalculated each fight... it's just a predetermined sequence and the 7% is almost meaningless because the RNG is NG.

To OP: you have an unlucky sequence... unless you really need him, you should wait until you could beat him 100% of the time before spending more stamina.
It may be predetermined sequence as you say, but I am pretty sure that each instance of the sequence id calculated separately using the percent value, so everything said about that still applies. If it was not then everyone would get him to join in the same number of wins.