Chris McKay, director of the upcoming live-action Nightwing movie, recently revealed what he requires from the actor who eventually lands the "grueling" superhero role.

<em>Via Chris McKay on <a href="https://twitter.com/buddboetticher?lang=en" target="_blank">Twitter</a></em>

<em>Via Chris McKay on <a href="https://twitter.com/buddboetticher?lang=en" target="_blank">Twitter</a></em>

<em>Via Chris McKay on <a href="https://twitter.com/buddboetticher?lang=en" target="_blank">Twitter</a></em>

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"He has to," McKay said when asked if the actor will have to share his love for the DC hero. "It has to be full commitment," he added, noting that it's "going to be grueling from a martial arts, gymnastics and stunt perspective."In a series of earlier tweets , McKay explained his affection for the Robin in the comics, noting how Dick Grayson's transition to Robin and then Nightwing wasn't told through flashbacks in the comics. Instead, readers had the opportunity to experience his growth in "real time" as it happened.The LEGO Batman Movie director went on to note how those who initially wrote off the character "perhaps had their opinions changed as we watched him 'grow up' right in front of us." For McKay, Robin's relationships felt authentic to him "because he was the window character with which we experienced Gotham city."McKay previously spoke more in-depth about his love for the character , saying, "He's this guy who has all these negatives and then even more negatives and yet he remains. Those are things why I like Dick Grayson, why I like the idea of Nightwing as a movie." Announced earlier this year , the Nightwing movie is reportedly being written by The Accountant scribe Bill Dubuque. The solo Nightwing film is currently one of over a dozen movies planned in the DC Extended Universe While there are plenty of adventures to choose from, here's our list of the best Nightwing comics to adapt for the upcoming movie

Jordan is a freelance writer for IGN. Follow him on Twitter @jdsirani