David Harbour faced some serious allegations before filming the last season of Stranger Things! According to a bombshell report from Dailymail.com on Saturday, Millie Bobby Brown accused her 50-year-old co-star of bullying and harassment! Whoa! A friend of Lily Allen, who broke up with David after he cheated, came forward with the shocking claims. The pal alleged the 21-year-old actress filed a complaint against him over his behavior toward her, sparking an internal inquiry by Netflix that lasted "for months.