>>39684630I had an idea like this where Shellder who lost their hosts due to Slowpoke Tail poachers would become bitter. This form would be Water/Poison or Poison/Steel. Then a Crustle would come along and adopt them as a home and the two would evolve together into a righteous paladin armored crab which would be Bug/Psychic as Shellder's venom awakens Crustle's psychic potential just like it did with Slowpoke. It would get some ability that lets it destroy Dark types, either an immunity or Justified or something.
>pic not specifically related but the essence of the idea. 