User blog:Demon Killer/Help!!!!

I need help with figuring out what's the name of this show that's about a guy who could turn a body part or the whole body into something else. There was also a toy made for it, that allowed it to detach the arm, leg or head and replace it with another piece from another toy that's built in a same way.

Here is a diagram of the toy that I'm talking about. The triangles are the sockets where you put the body part onto it.

Again, it is urgent to find out what show or movie that this toy and set of character is from because it's one of the things that I have been through but couldn't remember but since this one is the most coolest looking thing, I thought this one should be first to figure out what it is.