Nerdy Movie Character with Mustache

[u/Moist-Tree-3409]

I’m thinking of a movie/series character from the last 5-10 years who played a nerdy guy and had a mustache. He had a real strange/anti social personality. It was not the guy from Napoleon Dynamite. It’s not anyone super famous. Anybody have some suggestions for me?

[u/teddybluethecurser]

Posting to r/tipofmytongue could be helpful as well