I'm not really suggesting this for this year's event, but mostly for 2018 or even further on. I just sorta think that these are cool, and that they'd be cool to see in the game, I guess.

Angelic encounters

Nepheline's father
Roughly what I imagine:
"A large, pale lion approaches you as you explore. He definitely isn't one of the Nephelines, but by the way that he's charging at you, you've got a strong suspicion that he might be well acquainted with them!"
A regular lion that has fathered (or mothered- this could be a female lioness encounter!) a Nepheline with an Angel, and is here to punish you for smiting his child!


Seraphim
Seraphim are said to have the faces of a person and then of lions, right? At least sorta? Well, it looks like it here, at least.


Horde of Holy Animals
This would definitely have a different name, also, the picture is just a rough example.
"A horde of angelic creatures in the form of local wildlife surround you! They aren't going to let you destroy this land with your Demonic acts any longer!"



Demonic encounters:

Demogorgon
A terrible beast with whip-like arms and the heads of a monkey! Probably pretty agile, capable of stunning a lion. This picture is from Dungeons and Dragons.


Orobas
I don't really have much to say here other than that fighting a horse-headed dude would be awesome. Sorta like Sitri, but maybe more powerful?


Stolas
I doubt that you'd even fight this dude, maybe just get a Shard of Evil or a Demon Scale from his encounter. Since Stolas is apparently tied to knowledge, maybe he gives you a little blurb like "Stolas imparts you with some minor demonic knowledge...and a Demonic Scale! Sweet!"


Marching Horde
This picture is from Dungeons and Dragons again, but my idea for this one is a group of generic (probably animal-themed- animal heads, legs, tails, fur, mix-matched all together) demons. They're not very powerful, having about the strength of the Pack of Rabid Hyenas encounter.


Behemoth
I couldn't find a very good picture for this one, but basically, a massive, terrifying elephant or rhino, tinged red and possibly charging at the player's lion?