The son of late Star Trek creator Gene Roddenberry says his father would have been on board with an Enterprise crew member being portrayed as gay, but he's unsure if it should have been helmsman Hikaru Sulu.

Rod Roddenberry said his father would have been supportive of a gay Trek character and commended the Star Trek Beyond filmmakers for featuring a LGBT character. Roddenberry died in 1991.

"I think he would be 100 per cent in favour of a gay character in Star Trek," said Roddenberry during an interview Tuesday.

"There's so much going on in the world today. I think he would love any sort of social issue being brought into Star Trek."

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Actor John Cho, who portrays Sulu in the rebooted series, revealed that the upcoming film will show his character with a male spouse raising an infant daughter, an approach that doesn't 'make a big thing' out of a same-sex relationship.

Star Trek Beyond actor John Cho told Australia's Herald Sun last week that a scene in the upcoming film plainly presents Sulu with a male spouse raising an infant daughter.

Cho said he liked that the approach doesn't "make a big thing" out of it.

However, original Sulu actor George Takei called the decision unfortunate.

The openly gay 79-year-old actor told The Hollywood Reporter that he thought the character had been altered and would have preferred for filmmakers to create an entirely new gay character.

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Actor George Takei said he felt a new character should have been introduced as gay versus changing the sexual orientation of an existing one. (Mario Anzuoni/Reuters)

Star Trek Beyond actor and screenwriter Simon Pegg defended the choice in a statement and said the filmmakers wanted a LGBT character to be "someone we already knew because the audience has a pre-existing opinion of that character as a human being, unaffected by any prejudice."

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Star Trek Beyond director Justin Lin (second left) poses with actors Idris Elba (left) Simon Pegg and Lydia Wilson at the film's U.K. premiere in London on Tuesday. (Ian Gavan/Getty Images)

Roddenberry understands Takei's opinion that his father likely didn't intend for Sulu, who never had an onscreen love interest in the original TV and film series, to be gay.

"In a way, it's George's character," Roddenberry said.

"I can understand why he feels strongly about it. I don't see why everyone is bickering about it. It's about [expletive] time. Let's just do it."

Roddenberry, who is serving as an executive producer on the upcoming Star Trek series on the CBS All Access online video service, said his father would have likely created a gay character to be featured in Star Trek: Deep Space Nine. The spin-off of Star Trek: The Next Generation ran from 1993 to 1999.