Yellowjacket Kha'zix and Mad Mantis Cho'Gath skins

Riot has made an insect skin for a void creature champion before. Kog'maw has his Monarch skin that turns him into a butterfly. Because of their somewhat insect nature, giving each void creature champion an insect skin seems fitting. Kha'zix is more vespid, fitting with bugs like bees, wasps, and hornets. He has similar wings and stingers with his leap and void spike abilities. It would also be amusing to hear him make buzzing noises. Cho'Gath walks on two legs and has forward pincers. This makes him fit with praying mantises. To make the appearance fit with Cho'Gath's personality, he would have a much more gaping maw.