I made a riddle too

Well, thanks to Fritterz' riddles I wanted to make one too. There won't be a prize, but, come on, it's just a game. You don't need to participate if you don't want to. It may, or may not be easier than his, depending if you even know the answer as a thing, I am not sure about it's popularity, but anyways, let's start this.

Part I:

http://ddragon.leagueoflegends.com/cdn/img/champion/splash/Karthus_4.jpg http://ddragon.leagueoflegends.com/cdn/img/champion/splash/Gragas_9.jpg

Part II: http://ddragon.leagueoflegends.com/cdn/img/champion/splash/Viktor_3.jpg http://ddragon.leagueoflegends.com/cdn/img/champion/splash/Poppy_3.jpg

This may do it for now, but I'll keep looking and may add some pictures that'll make it easier (or you just get confused, idk)