Nasus, while not a demon, personifies both gluttony and envy (of me) so I guess that makes him pretty close.

edit: Sloth, too

Shaco, Hecarim, Mordekaiser.

RiotRaven discusses it in bits and pieces.
http://na.leagueoflegends.com/board/...78448#28578448

So, in a biblical or religious sense, nope. Same for angels, they are simply a normal race in the LoLverse. We may end up with one that is stripped of all its connotations, which is a good thing in my opinion, or one similar to a Warhammer 40k style demon. Probably best to stay tuned.

As sceptical as it is, one of the rumours surrounding Shaco is that he's a demon from another dimension.

*Clears his throat*

"You're seriously asking a giant DEMON bird...for a joke?!"

Checkmate.

Bump.

Demons are pretty cool so I could see a demon champ coming to LoL but if they did, it wouldn't be a stock demon. We'd find our own take on demon. There will never be a heaven and hell in LoL that is just too cliche.

Similar to Kayle though there is no reason why we couldn't have a demonic champion with a unique LoL take.

how else would you do a demon though? I'd like to see a Jekyll and Hyde type champion where in one form, they have a more restrained and even shy persona then they morph into a crazier kind. It's more interesting than a sort of "the world is mine to rule!" kind

Err.... If cho'gath's not a demon, then I don't know what is lol

However, I wouldn't mind seeing something more along the lines of the archetypical fire-and-brimstone-themed demon. Maybe something like a Balrog?