Bigger isn't always better. After delivering a truly epic crossover in 2017 with Crisis on Earth X, the ArrowVerse shows will be delivering something a little more personal for this year's event.

The next DC TV crossover will introduce the character of Batwoman (Ruby Rose) and Arrow star Stephen Amell told Digital Spy that it'll be more intimate than the hugely ambitious Crisis.

"I can't say shit!" he laughed when asked about the top-secret team-up. "But I do know that when it got pitched to me, when Greg [Berlanti, executive producer] pitched it to me, I was like, 'Oh man, that's awesome! Really?!'."

Amell added: "Because we went so big with the crossover last year, you can't go bigger, so you have to go more about the characters and the story."

Axelle/Bauer-Griffin/FilmMagic/The CW

Related: Ruby Rose hits back at critics of her Batwoman casting

One character dynamic that the crossover promises to explore is the relationship between Batwoman and Melissa Benoist's Supergirl, with Benoist telling us that she's looking forward to see how the two characters react to each other.

"Throughout the seasons, Kara's had a few funny quips about Batman and her opinions on him – she thinks vigilantes are nuts," she said. "So I'm excited to see her meet Batwoman, and see how they interact."

The next DC TV crossover is expected to air in late 2018. It's already been announced that, while Arrow, The Flash and Supergirl will all be involved, Legends of Tomorrow will be sitting this one out.

Warner Bros.

"We're not in the crossover this year – Legends are not in them at all," revealed Caity Lotz, who plays Sara Lance, with Legends showrunner Phil Klemmer explaining: "There's another show that's gonna get launched [with Batwoman] and it just became over capacity."

The Flash season 5 begins October 9 on The CW. Supergirl season 4 follows October 14, with Arrow season 7 airing from October 15 and Legends of Tomorrow season 4 kicking off on October 22.

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