Actor Ray Fisher on Wednesday accused director Joss Whedon of `gross, abusive, unprofessional` behavior on the set of 2017's `Justice League.`

`Joss Wheadon's on-set treatment of the cast and crew of Justice League was gross, abusive, unprofessional, and completely unacceptable,` tweeted the actor, who played Cyborg in the DC Comics superhero team-up movie. `He was enabled, in many ways, by Geoff Johns and Jon Berg,` he added, referring to the Warner Bros. executives who headed up DC Films (Berg also served as a producer on `Justice League`).

Fisher did not detail what Whedon did on set that he considered to be abusive behavior; reps for the actor and for Whedon did not immediately respond to respond to requests for comment.

Whedon famously took over `Justice League` from its credited director, Zack Snyder, and reshot several sequences and oversaw the film in postproduction. HBO Max last month announced plans to release Snyder's previously unseen cut of the film.

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#JusticeLeague star Ray Fisher is calling out the film's director, Joss Whedon, on social media. The Cyborg actor accuses him of "gross, abusive, and completely unacceptable," behavior on set. The full story, is at the link in bio.

A post shared by Hollywood Reporter (@hollywoodreporter) on Jul 1, 2020 at 11:09am PDT

When reached for comment on Wednesday, Berg told the reporter it was `categorically untrue that we enabled any unprofessional behavior.` `I remember [Fisher] being upset that we wanted him to say 'Booyaa,' which is a well known saying of Cyborg in the animated series,` said Berg.