Jason Momoa allegedly yelled at and mistreated the crew on the set of his movie A Minecraft Movie, according to one of his costars in the upcoming film. YouTube streamer Valkyrae, 32, appeared Friday in a Hot Ones-inspired segment opposite fellow YouTuber JasonTheWeen, where she was asked about the worst celebrity experience she's had. Valkyrae, whose real name is Rachell Marie Hofstetter, replied, “So, Minecraft movie - I have a cameo in the Minecraft movie that's coming out - I would have to say Jason Momoa.” Valkyrae claimed that she saw Jason mistreat some of the crew during production of the flick. “It was pretty disappointing,” Valkyrae said. “It was after a very intense scene - and it was a very emotional scene - so maybe he was still in character, I don’t know. I was just surprised about how he treated some of the crew.” Valkyrae said Momoa’s conduct made for a toxic workspace. “I was like man, this is not a good work environment, I would not be happy working under these conditions,” Valkyrae said. “I would have to say that was the worst celebrity thing I've seen.”