'Definitely Not Rengar and Khasix' skin ideas.
'Definitely not Khasix' could have white fur taped (extremely obvious-like) all over him, with cat-ears and an eye patch on with a yellow light or something. A rope for a tail. Ya know, stuff like that. Rengar could be covered in purple paint, with some of his white fur showing through still. Maybe a bandanna tied around his mouth with a goofy version of Khasix' mouth drawn on it. And cardboard tubes painted purple to match Khasix' wing-like things.
