Not purposely made as a league concept, but i found this persons art and thought it would match up perfectly with the champion.
I currently have no name for this concept.
Artwork by http://jasontn.deviantart.com/
Mimy1 votesYou don't know your champions.. Looks more like 
Barbwired Mind1 votesHe's holding an axe, and i wanted to see a concept on olaf that didn't make him seem so menacing. This concept is inbetween. But grag is just too fat for an outfit like that. Beside he has a helmet that clearly says viking. Honestly.
JaycemeSwain1 votesYou do realize that real vikings didn't have horns on their helmets. If you remove the horns, you have Dwarven warrior / , as dwarves are just short vikings.