I would probably be the ultrapowerful supervillain who actually succeeds in conquering the planet and crushing all who oppose me. Mwa ha ha ha haaaa
Your introductory line would be exclusively to fulfill the "hooded figure is actually friendly" tropeThe quiet guy always keeping his distance from other people.
I'd have my earbuds in most of the time, probably, and a look on my face that makes you think I'm unfriendly even if that's not the case.