Interesting stuff, Ry. What influences you?
Oh, pretty much anything I see that I like. I'll take both thematic and specific visual cues from all sorts of things both fictional and otherwise. If you mean technique or style, I very rarely study such, but if pressed might cite webcomics like Zebra Girl, Subnormality, and Ava's Demon as ones that inspire me, visually- for a long time webcomics were the main form of visual art that I consumed. Also the graphic novel Saga, I rather love the art and character design in that.
The tribal guy is more towards the abstract end of my inspirations, more of a generalized riff on a sort of Mad Max-esque techy muscular future that just fell out of my head without a ton of thought. I started drawing a muscular dude and gave him some accoutrements, really.
The scene of the bear about to kill the monkey stems mostly from my fascination from the brutality and relative fluidity of Bronze Age era war and politics- the bear is a part of a raid-heavy tribal culture, and the monkeys are part of a bureaucratic empirical culture mostly based on ancient China.
The haloed lich on the cross was something of a doodle that halfway through turned into a specific visual riff on the being Adam, from Evangelion.
The bat-man... I've always held a specific fascination for altered humans, or humans combined with something else. Not sure why, but it's the reason I draw a lot of animal people, I should think. Ultimately I think I could probably attribute it to stuff like the Secret of Nihm, the Fly, Planet of the Apes, and the Thing. There were a lot of things I saw young that might have impressed an interest in the human form modified or altered.
-EDIT- Do you have any specific influences yourself you'd care to name, yourself? I dig your outline-ambivalent, pixel-pencil style.