Cheshire

An unwholly hybrid mixed of a Leafeon, Gengar, and Lumineon. They are considered a Ghost/Poison type, but the actual "poison" is debatable. Their ability is Levitate, allowing immunity to Ground-type moves, and can not be poisoned by other Poison-type Pokemon unless by Corrosion. Despite having gills, they can not breath underwater and require oxygen in their lungs to live.

Immune against: Ground-type

Effective against: Ghost-type, Grass-type, Fairy-type

Weak against: Ghost-type, Dark-type, Dragon-type

(all rough draft, I'm so indecisive)