Meh, the sprites could have been worked better to better define them, honestly speaking here, but that's still a pretty good effort. I'm mostly talking about their proportions, you'd want them to look consistent with the RSE style and anatomically correct.
I don't mind Roothoot and the rest being co-joined either along with Pinnister and friends, it makes these actually original in the sense that you wouldn't have to put in the gen 7 starters.
It'd be interesting to see someone come up with consistent types and movesets for them too (like Pinnister being Water/Fighting, ectetera) if such were possible. I wouldn't be against the idea. Having these designs just go to waste seems like a crime in a certain way, since they made such a big impact throughout the leak season. To have something against them would be merely out of pettiness.
Heck, this would quench a lot of Ballio fan's thirst for the big lug.