Updated pic above.
He looks like a normal boy...until he uses his SLINKY powers. Animating a walk cycle, falling down stairs and using his Slinky powers is going to be a real challenge. I am going to need to do a lot of study on how a Slinky moves, and then create a 2D flat interpretation of it, and then figure out how it works with the character's anatomy and movement. But I am looking forward to animating him.