My impression is he sounds like Pr. Frink from the Simpsons but has a very shy personality from his expression

Oooooh I see I see .o.!! duly noted! He's definitely a bit shy for sure yeah ^ ^!

I get the feeling that he's rather opiniated on a number of things, but maybe not always willing/able to say it out loud. Save for when he feels very strongly about it, or it's related to his work. A workaholic type, or at least someone who gets lost in his work easily

pretty much on the money .o.! yeah he's a workaholic for sure, that's something that rears its head in the story pretty frequently! and very neat analysis ^ ^! yeah especially on stuff he has opinions on he usually holds himself back a lot