The 100's Richard Harmon has joined the cast of The Flash as a classic villain.

The Canadian actor will appear as Owen Mercer, aka Captain Boomerang, in the upcoming ninth and final season of the Grant Gustin-led superhero drama (via Deadline).

A different iteration of Captain Boomerang, aka Digger Harkness, previously made their Arrowverse debut and was played by Nick E Tarabay. The character appeared in season three and five of Arrow and is mentioned in the first season of The Flash.

richard harmon
Getty Images

Related: The Flash boss explains season 8 finale death and that cliffhanger

According to the CW's character description, Harmon will play a new post-Crisis Captain Boomerang. The villain has recently been released from Iron Heights and could still pose a dangerous and violent threat to Central City.

Earlier this year, it was confirmed that The Flash will bow out with its ninth season, putting an end to Gustin's stint as DC's speedy superhero.

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The actor, who also appeared on Glee and 90210, took to Instagram ahead of filming the last chapter to thank his co-stars, crew and fans.

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The CW

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"Tomorrow we start filming the final season of The Flash," Gustin wrote on September 14.

"I'll save the long, emotional captions for later in the season, but to say I'm grateful for this journey and the growth it's provided me in so many different ways would be a gross understatement.

"Thankful to everyone who helped give me this opportunity and all the fans of the show that have showed me and anyone that's been a part of The Flash love along the way."

The Flash airs on The CW in the US. Sky Showcase and NOW air the show in the UK.


Headshot of Stefania Sarrubba

Reporter, Digital Spy

Stefania is a freelance writer specialising in TV and movies. After graduating from City University, London, she covered LGBTQ+ news and pursued a career in entertainment journalism, with her work appearing in outlets including Little White Lies, The Skinny, Radio Times and Digital Spy

Her beats are horror films and period dramas, especially if fronted by queer women. She can argue why Scream is the best slasher in four languages (and a half).