Gengee

Gengee are ghostly pokémon that were infected by the Weegee Virus. It evolves from a Haunteegee and is Gasgee's final form. It is rarely found in the wilderness due to the training necessary for it to evolve.

Appearance
They're bipedal balls of gas with hands and feet. Also a tail with no explained usage. They have red eyes and a uninteresting moustache. The gas appears to form some kind of fur or spikes on his back.

Ecology
When found in the wild, which is pretty rare due to the amount of experience needed for it to evolve, Gengee are prone in hiding inside old abandoned buildings, such as abandoned hospitals and schools. They're very territorial and appear to have established some kind of feudal system on the building it lives. It will either claim the territory or drive off the Gengee inhabiting it and will establish his domain over the Haunteegee, Gasgee and other ghost pokémons currently living or wanting to live there. Non-ghosts pokémon will be bannedt from the territory.

Skills
Being ghosts, Gengee can pase through walls and fly like any ghost can do. He can also transform his body into a deadly gas cloud and use it both for evading attacks and for causing serious damage on his enemy. His signature move is Shadow Ball, which summons a ball of dark energy and launches it at a high-speed at his enemy. The projectile appears to be very dense and has the ability to lower the foe's special defense.

Trivia

 * They appear to be slightly sapient and have even tried to rebel against the Gee-kind.
 * Some are ACTUALLY sapient.