Just a concept sketch and color for a Haunter+Shiny Gourgeist hybrid. Trying to think of how to set up the Gourgeist a little more in this one, but it might be okay.

I incorporated the pumpkin body into the Haunter, and turned the stumpy legs into Haunter-like trails, so that the hands look like the arms have been amputated, leaving tattered stumps where the arms would connect to the body, and also having the six spikes along the Haunter's body have the Gourgeist hair curl.

I'll do a back view at some point, because there's a couple details that need to be shown on its back.