I never see anyone talk about the panther demon, and even the Compendium doesn't have a page on this "character". Yet this is the creature that pretty much set everything in motion. If Serge hadn't been bitten, none of the other stuff would have ever happened.
So my question is, who or what was the panther demon? We know it wasn't Lynx, because Lynx didn't exist yet. And there's no way you can tell me that after all of Belthasar's careful planning, his whole success depended on a random panther demon biting Serge.
Also, it's not just a panther, but a panther "demon". What's the significance of that?