Actor Jack Black has revealed that one of the movie roles he most regrets turning down was the character of Syndrome in Pixar`s critically acclaimed animated film The Incredibles, admitting the decision taught him a "valuable lesson," according to People.

In an interview, the 56-year-old actor said he was once offered the role of Syndrome, the primary antagonist in the 2004 superhero film, but declined after raising concerns about how the character was written.