They don't want to bring anime-exclusive characters at all so far. Only these who had their game counterparts such as Korrina, Gary, Iris and so on.Volkner is such a random choice.
Where the **** is PAUL????? Bring me back DP characters that matter
I don't want to dwell on this since posts were nuked last time, but Taiwanese twitter account leaked that Ash would win/reach rank 99 and Volkner would be back