A perfect song for a perfect villain, I really feel that if the law of weirdness magnetism wasn’t around gravity falls, Bill could have killed so many people.
Bill's theme songs that have nothing to do with gravity falls: Phantom (NateWantsToBattle) Branded (also NateWantsToBattle) Hell Of a Ride (Bo Burnham) Sad (also Bo Burnham) Welcome To the Internet (Bo Burnham again, but come on this one really fits) Hayloft & Hayloft II (both by Mother Mother) {Bill being the dad in the songs} [he could also possibly be the kid in the second song, given what we know of his backstory] We'll Meet Again (Vera Lynn) {he legit sings it in the show, so i guess this is kinda cheating} Puttin On the Ritz (Taco) {he just gives off the vibe.}