Mckenna Grace Phoebe Spengler Paul Rudd Gary Grooberson Carrie Coon Callie Spengler Finn Wolfhard Trevor Spengler Dan Aykroyd Ray Stantz Kumail Nanjiani Nadeem Razmaadi Patton Oswalt Dr. Hubert Wartzki Celeste O'Connor Lucky Domingo Logan Kim Podcast Emily Alyn Lind Melody James Acaster Lars Pinfield Bill Murray Peter Venkman Ernie Hudson Winston Zeddemore Annie Potts Janine Melnitz William Atherton Mayor Walter Peck Shelley Williams Senior Advisor John Rothman Library Administrator Brandon Burke Firefighter (1904) Ian Whyte Garraka (Puppeteer) Evelyn Edwards Reporter Deeivya Meir Reporter Megan Robinson Mother (Coffee Shop) Claudia Nell McCoy Woman Running Away (Beach) Remy Germinario Tourist Couple Looking at Map Cassidy Goron Child (Beach) Jesse Gallegos Vape Shop Clerk Jonathan Mercedes NY Cop Adam Murray Truck Driver Pat Kiernan News Anchor Shelby Young Mini-Pufts (voice) (uncredited) Ryan Bartley Mini-Pufts (voice) (uncredited)