Tytan Havok
Bring it.
I image all the bonkers pokemon like Snorlax or Aggron or Tyranitar would be incredibly rare. Also, I would assume the legendaries would be considered mere mythology/urban legend. Sure, there would be alot of issues caused by the pokemon, but you would also have pokemon to help deal with it. I assume the power abuse that would come with bad people using them would not cause an increase in people abusing their power, it would just make the instances where it does happen more intense.