Who played the voice of slappy the dummy in goosebumps?

In the "Goosebumps" film released in 2015, the voice of Slappy the Dummy was provided by actor and comedian Jack Black. He also portrayed the character of R.L. Stine, the author of the original "Goosebumps" book series. Jack Black's performance added a humorous and lively personality to Slappy, making the character memorable in the film.