My first custom action figure, Halo's Master Chief as a female, maybe named "Lady Chief" or "Mistress Chief"? Using Kelly's body as a base I swapped the head, chest armour, forearms/hands, and calves/feet for Master Chief's. I then painted over Kelly's parts with Testors Olive Drab and Engine Black. Also painted over the magnum and shotgun that came with Kelly to have a more default look.
The green paintover isn't a perfect match to McFarlane's Chief but I can live with it.
This was a pretty fun project and served as practice for my next custom...