Marchosias, a great Marquis of hell, depicted as a wolf with griffin wings and a serpents tail. "He is a strong fighter, gives true answers to all questions, and is very faithful to the [summoner] in following his commands." makes sense why theres a shitton of books around, if they give true answers to all questions.
this guy is a sheepdog. you can tell by the spiked collar they're wearing - "Spiked collars date back to ancient Greece, where they were used as neck armors for dogs during herding and flocking. Dogs are beneficial animals in this matter. They bark and aware everyone in case of a threat." <- not the only source. dozens of sources if you look up why dogs wear spike collars.
so they're a protector of sheep. possibly a de-crowned god? its not a stretch to assume their hypothetical followers would have been sheep. it might be especially telling that the only way to unlock the wolf follower form is for the lamb to commit heinous actions and become "a wolf in sheeps clothing". lot of connections there imo.
other design elements - scissors and knives on the belts of their cloak. the overall vibe of the room just reminds me of a surgeon or mad scientist. potentially even frankenstein, so im thinking about fucked up necromancy. winter colors, also matches sheep since sheep wool is good for keeping out the cold and they would survive in it just fine.
upper right and left, those are crusade doorways, so we'll meet them on crusades and they'll give us a buff of some kind. and given that they look to be a surgeon...
