AceShowbiz - Jason Momoa appeared unfazed by recent allegations leveled at him. After being accused of mistreating his co-worker, the "Aquaman" actor looked carefree at his band Oof Tatata's concert in Miami.

On Monday, September 16, the 45-year-old actor joined his fellow band members to entertain their fans in the city in Florida. He and his bandmates took the stage at Gramps as he promoted his Meila Vodka brand.

During the gig, Jason looked in good spirits as he took time to talk to concertgoers. He was caught on camera standing behind a microphone on the stage while explaining something to the audience. He was carrying a glass of drink, seemingly from the Meila Vodka brand. At one point, he took a sip of the drink while still standing on the stage.

For the concert, Jason went with a casual ensemble. He showed off his tattoos in a sleeveless black top. He completed the look with a pair of gray pants, black sunglasses, which he tucked in his top, a black hat and matching leather belt.

The actor, who flaunted a beard and mustache, accessorized himself with a stack of bracelets, some rings and a silver chain that he wore over his pants. In addition, his apparently short black hair was mostly covered with the hat.

The new sighting came a few days after Jason was accused of mistreating his co-worker on the set of "A Minecraft Movie". Earlier in September, YouTube streamer Valkyrae went public with her accusations during an appearance in a "Hot Ones"-inspired segment opposite fellow YouTuber JasonTheWeen. At that time, she received a question about her worst experience working with a celebrity.

Valkyrae shared, "So, 'Minecraft Movie' - I have a cameo in the Minecraft movie that's coming out - I would have to say Jason Momoa." According to the 32-year-old Internet personality, Jason "mistreated some of the crew" during production of the upcoming film, in which he plays Garett "The Garbage Man" Garrison.

"It was pretty disappointing," she described the incident. "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 that Jason "really mad at them that they weren't doing something right in setting up the shot and stuff." She further claimed that the Hollywood hunk "was just angry, really mad, and yelling," before adding, "I was like, 'Man, this is not a good work environment, I would not be happy working under these conditions.' I would have to say that was the worst celebrity thing I've seen."