Billy Hargrove

Billy blows into Hawkins as Max's new stepbrother, a hot-tempered California transplant who drives too fast, sneers at the local kids, and clearly resents having to babysit a stepsister he barely tolerates. Charming and cruel by turns, he postures as the coolest guy in town while something angrier simmers underneath.

Montgomery plays swagger as armor, letting flashes of fear and rage slip through the bravado so you sense there's a wound behind the sunglasses before the show ever explains it. He's an irresistible heel — magnetic, unpredictable, genuinely dangerous — the rare bully who makes you want to know why.