This is Burgergot. He's a fan-made alternate skin concept for the great but oft-under-appreciated League of Legends champion: the big fat crab king Urgot.
Impressive and often hilarious champion skin concepts are frequently posted on the League of Legends forums by talented fans of the online multiplayer game. But this one by Necronolith has to be one of the best I've seen so far in my League journeys. Just like at the idea for his W shield spell:
Pickles!! And he would shoot squirts of ketchup instead of those creepy dagger things he normally shoots out of his hand cannon.
(Urgot, in case you don't name, looks like this in League of Legends):
A close runner up for the category of "Urgot skin that Riot Games desperately needs to make" is this victorious skin concept by Twin Arrowguns:
I don't say this very often, but...RITO PLS.