what are demons. How are they created? Do all demons feed off of negative emotions(eve feeds off pain or agony). Are there good demons(not serial murderers)? Is shaco a demon? Do demons feed off of emotions in general or just negative human emotions? Overall information of demons would be cool.
We don't know very much, but demons seem to be embodiments of a specific emotion or weakness, which prefer to feed on that specific thing. They are in most cases primordial, though we don't know their origins.
There's one "good demon." Well, actually she's an ocean spirit; her name is Janna, and she thrives off the devotion of Zaunites. Extrapolating from this, you could say there are spirits that feed on both positive and negative emotions, and the negative ones just happen to be called demons.
Shaco is in lore limbo but currently he is not a demon.
Shacos current lore says that he is a puppet that is animated by twisted magic, so he is not a demon.
However I wouldn't count on that being still canon once he gets a lore update.
