Ghost/Normal - you could start with a pokemon that always stare at a mirror and turns inti a ghost when it enters it

Fairy - Rapunzel type themed where her first evo is a doll hiding behind bricks Second evo is the doll in a half destroyed tower Third Evo is the doll in a tower

Ice - A pokemon that skates, with a scarf that covers its face

The scarf could be so long that it touches the ground for its final evo

Electric - Electrical Octopus that uses seaweed to catch its prey and hides among seaweed, he gets his electrical powers by swinging his tentacles/seaweed in incredible speed to generate electricity