Common Side Effects (2025) Cast & Character Guide — No Spoilers | Who's That?
Who plays who in Common Side Effects (2025)? Browse a spoiler-free character guide with photos of every major character and the actors behind them, including Dave King, Emily Pendergast, Mike Judge.
- Marshall Cuso (voice) — played by Dave King
- Frances Applewhite (voice) — played by Emily Pendergast
- Rick Kruger (voice) — played by Mike Judge
- Agent Harrington (voice) — played by Martha Kelly
- Agent Copano (voice) — played by Joseph Lee Anderson
- Hildy (voice) — played by Sue Rose
- Amelia (voice) / Linda Tree (voice) / Diane (voice) — played by Shannon Woodward
- Nick (voice) / Frat Guy (voice) / Bud Budrigger (voice) — played by Ben Feldman
- Cecily (voice) — played by Sydney Tamiia Poitier
- Kelly (voice) / Susan (voice) / Oncologist (voice) / Female DEA Agent (voice) — played by Shalita Grant
- Jonas Backstein (voice) — played by Danny Huston
- Rusty (voice) — played by Steve Hely
- Kiki (voice) — played by Christine Ko
- Zane (voice) — played by Alan Resnick
- Sonia (voice) — played by Lin Shaye
- Samurai (voice) / Line Guy 2 (voice) / Connor (voice) — played by Bob Stephenson
- Test Subject 3 (voice) / Lawyer (voice) / DEA Dispatcher (voice) — played by Timothy Simons
- Hoang (voice) — played by Jon Foor
- Christopher (voice) / Mysterious Passenger (voice) — played by Andy Daly
- Tommy (voice) — played by Nicolas Cantu