Do they smoke? Despite the 1940s military look he's got, he actually doesn't.
Drink (alcohol)? Oh yeah... we have a feeling he can probably drink most anyone under the table and not even have a hangover the next day.
Drugs? Possibly has sampled certain chemicals from other worlds, but is likely clean
What genre of movie or books do they prefer? World War II movies and romance novels. The former for the nostalgia, the latter for the lulz
What is their sexuality? How long is this answer supposed to be?? Let's say he's not particularly picky, as long as he's with someone sentient and legal
Do they like animals? One gets the feeling he'd be the type to keep a dog, if he ever put down any roots.