David Harewood enjoys portraying J'onn J'onzz, aka Martian Manhunter, on Supergirl. However, he is not a fan of pulling double duty as the villainous Cyborg Superman on the DC Comics-based series.

Speaking to a young fan at Supernova Comic Convention in Australia (via ComicBookMovie), Harewood revealed his distaste for the role, criticizing how the character is written and portrayed visually.

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"I don’t like playing Cyborg Superman," Harewood said. "It’s boring. They didn’t really flesh it out, they didn’t really write for the character. They just gave me this rather cheap-looking mask and no costume, and said ‘Okay, you’re Cyborg Superman.’ But it didn’t really pan out – they didn’t really go into why he was a cyborg, how he became a cyborg, what his powers were...it was just kind of randomly calling him ‘Cyborg Superman.’ I was very excited about it at first, but then I very quickly realized that there wasn’t really much to it so, it’s kind of boring. Whenever I’m walking to my trailer and I see that costume, I just switch off. Because I know it’s going to be a really boring day.”

Check out the full interview with Harewood below.

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Returning to The CW on Monday, October 9th at 8 p.m. ET/PT, Supergirl stars Melissa Benoist as the Girl of Steel, David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen, Chyler Leigh as Alex Danvers and Jeremy Jordan as Winn Schott, with appearances by Calista Flockhart as Cat Grant and Tyler Hoechlin as Superman.