GnarCat
Pretty simple concept, and something I think the internet could totally get behind. Gnarcat would be Gnar in a cute little kitty costume (similar to Dino Gnar!). The primary differences would be in the particles and the like... and in the /dance.
Q: Boomerang/Boulder toss: Throws a tasty pastry, that comes flying back to Gnar. Bonus points if it has a rainbow trail. Mega Gnar throws a toaster. W: Hyper: Cute little Starbursts follow behind Gnar as he moves swiftly. E: More rainbows! Dance: Have him sing the Nyancat song with Gnar replacing Nyan, while doing so, have him float in the air, with a rainbow contrail following below him.
I look forward to reading any more concepts or changes the community might have :3