A pretty straightforward custom. That's a Warlock series Colossus with standard for me, fishing line raised seams, and cape. I tried to modernize the costume design just a bit, that's why I haven't changed the figures gauntlets and boots to all red - I liked a bit of gold on them. Also why the cape/shoulderpads are the way they are.
As for the rest: the shoulderpads are Dormammu's, I've opened the collar so they could be removeable. Cape was originally Dormammu's skirt piece, it reaches to Pyotr's knees the way I hung it. Belt was scratch built from bits of plastic.