Chris 'Casper' Kelly Director, Screenwriter Cristin Milioti Grace Actor Delaney Quinn Freddy Actor Topher Grace Ben Actor Keegan-Michael Key Buddy, Dark Buddy Voice Michael Shannon Willie Actor Patton Oswalt Strappy Voice Madison Skyy Polan Hannah Actor Luke Speakman Josh Actor Jamie King Screenwriter Tyler Davidson Producer Drew Sykes Producer Raphael Margules Producer J.D. Lifshitz Producer Tracy Rosenblum Producer Kevin Flanigan Executive Producer Dexter Braff Executive Producer Roberto Linck Executive Producer Nathan McAuley Executive Producer Emilio Schenker Executive Producer Gideon Tadmor Executive Producer Adam J. Wilde Executive Producer Geoff Yaw Executive Producer Ryan J. Kelly Executive Producer Zach Kuperstein Cinematographer Josh Ethier Film Editing Michael Yezerski Original Music Anna Kathleen Production Design Vince Calabrese Art Director Teresa Strebler Set Decoration Shawna-Nova Foley Costume Design Chelsea Ellis Bloch Casting Marisol Roncali Casting