Latest 22+ Millie Bobby Brown Eleven Millie Bobby Brown Stranger Things Cast. Here is everything you need to know about the young actress. Brown plays eleven, a taciturn heroine with telekinetic powers who goes toe to toe with the series' main antagonist (or herself?). Bubbly millie wore a buttoned up leather dress and flashed peace signs at the. Millie bobby brown stormed back onto screens as eleven in stranger things season 2 last week.