- Jeremy Ray Taylor as Sonny Quinn
- Madison Iseman as Sarah Quinn
- Caleel Harris as Sam Carter
- Wendi McLendon-Covey as Kathy Quinn
- Chris Parnell as Walter
- Ken Jeong as Mr. Chu
- Avery Lee Jones as the voice of Slappy the Dummy from Night of the Living Dummy.
- Jack Black as R. L. Stine
- Frank Welker as the voice of the Gummy bears.
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