Jason Momoa once again commented on Ray Fisher's allegations against Joss Whedon, Geoff Johns and Jon Berg for creating a toxic work environment on the set of Justice League. "THIS SHIT HAS TO STOP AND NEEDS TO BE LOOKED AT," the Aquaman actor wrote on Instagram.  "@ray8fisher AND EVERYONE ELSE WHO EXPERIENCED WHAT HAPPEN UNDER THE WATCH OF @wbpicturesNEEDS PROPER INVESTIGATION." He also said that the announcement he is playing Frosty the Snowman in an upcoming feature was fake and was issued to distract people from Fisher's allegations. Warner Bros. announced Momoa's casting back in July.RELATED: How Each DCEU Justice League Member Would Stand Up Against Wolverine In A Fight

Fisher later posted a screenshot of Momoa's post, where he also claimed that the Frosty the Snowman casting announcement was fake. "Hopefully now people see the depths that some are willing to go to hide the truth," he wrote on Twitter. "To think they believed my brother would sellout the cast/crew of JL for a corncob pipe and a button nose."

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Momoa's strong comments come a week after he posted "#IStandWithRayFisher" on his Instagram story, becoming the first Justice League co-star to support Fisher. Since then, Kiersey Clemons, who portrays Iris West in Zack Snyder's Justice League, also voiced her support.

Earlier this summer, Fisher accused Whedon, who took over directorial duties on Justice League following Zack Snyder's departure due to a family tragedy, of "gross, abusive, unprofessional, and completely unacceptable" behavior on the set of the superhero ensemble. He also alleges that producers Johns and Berg enabled Whedon's behavior.

Weeks later, WarnerMedia and Warner Bros. launched an investigation into Fisher's claims. However, the media conglomerate announced that Fisher is not cooperating with the investigator it hired to look into the matter and that Fisher failed to provide evidence to back up his claims. It also denied the Cyborg actor's later allegation that DC Films President Walter Hamada asked Fisher to relent on Johns and focus solely on Berg and Whedon.

Fisher denied that he has been uncooperative and posted an email that he sent on Aug. 26 after meeting with the Warner Bros. investigator. He also said that WB escalated the situation to new heights but is "ready to meet the challenge."

Justice League stars Ben Affleck as Batman, Gal Gadot as Wonder Woman, Henry Cavill as Superman, Amy Adams as Lois Lane, Jason Momoa as Aquaman, Ezra Miller as The Flash, Ray Fisher as Cyborg, Jeremy Irons as Alfred Pennyworth, Diane Lane as Martha Kent, Ciarán Hinds as Steppenwolf, Jesse Eisenberg as Lex Luthor and J.K. Simmons as Commissioner Gordon. Zack Snyder's Justice League will premiere exclusively on HBO Max in 2021.

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