A recent report claims that Millie Bobby Brown, 21, filed a bullying and harassment complaint against her 'Stranger Things' costar, David Harbour, 50, ahead of the final season of filming.

Stranger Things fans are reeling from bombshell reports suggesting that the on-screen father-daughter duo of Eleven and Jim Hopper faced intense real-life friction. Before filming the highly anticipated final season,

The investigation went on for months,” a source told the Daily Mail of the Netflix stars in an article published Saturday.

Millie Bobby Brown and David Harbour reportedly clashed on the set of Stranger Things. According to The Daily Mail, Brown — who plays Eleven on the show — formally complained about Harbour (who plays Eleven's adoptive dad, Jim Hopper) before the costars reunited to film the fifth and final season of Stranger Things.

Millie Bobby Brown filed a bullying and harassment complaint against her 'Stranger Things' costar David Harbour, which sparked a months-long investigation

With the final season of “Stranger Things” premiering later this month, David Harbour should be on top of the world. But it’s not his acting career that’s been making headlines lately; it’s his alleged behavior behind-the-scenes.

David Harbour went from character actor to streaming superstar, and his Stranger Things salary reflects that wild transformation.