Nyan cat rengar

Rengar's a total badass though, and all of his skins reflect that. I think Nyancat would go better on Nidalee, and would fit in well with the arcade line of skins.

That's just my opinion.

her traps could have little pop-tarts in them and explode in a shower of sparkles and colour when they're tripped.

her spears could trail rainbows

in human form she'd still be sandwiched between two giant pop-tarts (in a sexy way, of course, because she's nidalee)

http://stoopidthings.com/wp-content/uploads/2012/07/53-38690-sdcc2012_582-1342428701.jpg

have nyan cat play everytime he stealths

Before either of those concepts: Void touched Rengar and Zombie Rengar (ZomGar).

Just call them arcade rengar and arcade nidalee and you'd be set.