DC's animated Harley Quinn series has signed a new cast member, What We Do in the Shadows star Harvey Guillén.

Joining The Big Bang Theory's Kaley Cuoco who voices the titular role, Guillén will be voicing Nightwing, according to Deadline. The character of Nightwing originated in the Superman comics, and is also known as Batman's sidekick Robin/Dick Grayson. He took on the name of Nightwing after he parted ways with the Caped Crusader.

Season 3 will see Harley Quinn move to HBO Max, after being produced by DC Universe for the first two seasons.

harvey guillen, what we do in the shadows, zoey's extraordinary playlist
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Related: What We Do in the Shadows season 3 twist highlights the show's biggest strength

As well as Cuoco, Guillén joins a cast that includes What If...? and BoJack Horseman's Lake Bell, who plays Poison Ivy, and Encanto and Rouge One's Alan Tudyk, who plays the Joker.

Last week, director James Gunn confirmed he'll be appearing in a cameo role, playing himself in season 3. He confirmed the news on Instagram, saying: "Excited to confirm I'll be playing myself in season 3 of one of my favorite TV shows, @dcharleyquinn!

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"Thanks to the whole Harley Quinn gang for all the fun. PS. My Thomas Wayne biopic (in the show) is going to be a masterpiece!!"

harley quinn and poison ivy in the harley quinn season 2 trailer
DC Universe

Related: James Gunn confirms cameo in Kaley Cuoco's Harley Quinn

The upcoming season doesn't have a release date just yet, but it's apparently on the way.

Tweeting on at the start of March, the series' co-creator Patrick Schumacker uploaded a shot of Harley and Poison Ivy from the show, with an announcement reading: "Just finished the first audio mix of @dcharleyquinn SEASON 3! Call your friends! It's happening! It's happeniiiiiiiiing!"

What We Do in the Shadows airs on FX in the US and BBC Two and BBC iPlayer in the UK. Harley Quinn season 3 will stream on HBO Max in the US, while UK fans can tune in over on E4.

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