Explaining on Instagram: "In Season 2 (2017), Stranger Things still revolved around a relatively tight-knit ensemble. The core cast included Millie Bobby Brown, Finn Wolfhard, Gaten Matarazzo, Caleb McLaughlin, and Noah Schnapp as the central group of kids, alongside Winona Ryder and David Harbour as the emotional adult anchors. This season introduced Sadie Sink as Max and Dacre Montgomery as Billy, expanding the group slightly while keeping the story firmly rooted in Hawkins’ small-town dynamic