Bodybuilding star and Mr. Olympia winner Shawn Rhoden — aka “Flexatron” — has been charged with first-degree rape in Utah, according to cops.

The 44-year-old is accused of sexually assaulting a female bodybuilder inside of a Courtyard Marriott hotel room back in October. He has not been arrested yet, but a warrant has been issued by Salt Lake County prosecutors.

The alleged victim had tried to stop Rhoden — pushing him away and ordering him to stay back — but the hulking, 260-pound bodybuilder was too strong, according to his charging documents.

The woman told cops that he eventually got off of her and allowed her to leave, the documents said. She then went to police and immediately reported the alleged incident.

“On October 12, 2018, the Sandy City Police Department received a report of a sex offense at the Courtyard Marriott in Sandy City and Shawn Rhoden, 44-year-old male from California, was listed as a suspect,” said SCPD lieutenant Dean Carriger, speaking to The Post on Friday.

“Following an extensive investigation, Sandy Police detectives submitted the case to the Salt Lake County District Attorney’s Office on one allegation of rape against Shawn Rhoden,” Carriger said. “The DA’s office filed formal charges…and a warrant was subsequently issued for his arrest.”

The reigning 2018 Mr. Olympia winner was charged with one count of rape and one count of object rape, both first degree felonies. He’s also facing a forcible sexual abuse charge. His arrest warrant was issued on Thursday. It’s unclear whether Rhoden has agreed to surrender or if cops are looking to take him into custody themselves.

The bodybuilding veteran, who got his start in 1992 and has over 1.5 million followers on Instagram, describes himself online as having “one of the most sculpted, muscular physiques in the nation.”

“Shawn is not only an incredible bodybuilder in terms of the package that he brings on to the stage, but he also has an incredible fighting spirit, work ethic and the heart of a champion which are the qualities that will take him as far as he wants to go in the sport,” Rhoden’s website reads.

“Shawn ‘Flexatron’ Rhoden is a true champion and his message to everyone is to not give up on your dreams, however impossible these may seem. ‘Dream to Believe.'”