HBO Halloween Costume Ideas in 2026

HBO built its reputation on shows people can't stop discussing, and that shows up here. Christopher Moltisanti's Sopranos swagger, the Roy siblings' cold Succession power suits, Ozymandias's Watchmen menace, all from shows with real cultural weight behind them.

These costumes tend to reward people who've actually watched the show. Recognition drops off fast with a crowd that hasn't, so read the room before picking something too deep into a series.