The demon sphere in the background lol

The soundtrack to Donkey Kong Country is influenced by jungle music. It was a type of club music related to electronic and house music in Britain.

What even is this face? I agree that this is the face they make but what emotion is this suggesting?

An orange glower

Yes, it is very much a thing. Be prepared for lots of your quirks and personality traits to be revealed as symptoms of ADHD if you just got diagnosed lol. Not remembering names, asking people to repeat themselves and then realizing that you sort of heard them halfway through thier sentence. Hyper focusing on whatever. Dopamine seeking behavior. The list goes on. I am not a doctor, just another ADHD person on the internet. :)

ADHD

I know he is a gamer and played The Witcher 3 extensively. I think he must have played that game in full costume at least once, like some kind of video game / tv / book / real life inception.