By Jessica Derschowitz
Updated July 23, 2016 at 06:22 PM EDT

Eddie Redmayne might be playing a Hufflepuff when he hits the big screen as magizoologist Newt Scamander in Fantastic Beasts and Where to Find Them, but when it comes to his favorite character from J.K. Rowling’s wizarding world, he’s a Gryffindor through and through.

The cast of the upcoming film made an appearance on EW Radio (SiriusXM ch. 105) on Saturday at Comic-Con, where they revealed their favorite characters from Rowling’s original series of magical books and films.

For Redmayne, Weasley is his king. “I was a Ron fan,” he revealed. “I thought Rupert [Grint] was wonderful … even when he was really young he had the most expressive, kind of elastic face.” (Their shared hair color, he added, might have helped too.)

Colin Farrell, who plays the auror Graves in Fantastic Beasts, chose a fellow auror. “Mad Eye Moody, for the man-crush I have on the actor who plays him,” he said, referring to Brendan Gleeson. Alison Sudol also picked another key figure in Harry’s life: Sirius Black.

PEOPLE and EW editorial director Jess Cagle also asked director David Yates — who helmed Fantastic Beasts as well as the previous four Potter films — about returning to Rowling’s wizarding universe on screen. A producer on the Potter movies initially suggested a mockumentary based on the Fantastic Beasts textbook, he said, and when that was brought to Rowling had a different idea.

“She’d said, ‘You know what, I’ve been thinking about this for an age’ — because Jo has such an infinite knowledge of this world — and she’d already had a story of her own that she wanted to tell, it just triggered her,” he said. “So when she said, ‘Yeah, I’ve got a story to tell,’ that’s when I knew we were going back to it.”

The cast also stopped by the EW lounge at Comic-Con, and discussed what it was like when Rowling came to the set. Watch that video above.

Entertainment Weekly is on the scene at San Diego Comic-Con. Go inside with all our coverage, available here.

Fantastic Beasts and Where to Find Them (film)

  • Movie
  • PG-13
  • 132 minutes
  • David Yates