Other Mommy (2026) Cast & Character Guide — No Spoilers | Who's That?

Who plays who in Other Mommy (2026)? Browse a spoiler-free character guide with photos of every major character and the actors behind them, including Jessica Chastain, Arabella Olivia Clark, Jay Duplass.

• Ursula / Other Mommy — played by Jessica Chastain
• Bela — played by Arabella Olivia Clark
• Russ / Daddo — played by Jay Duplass
• — — played by Dichen Lachman
• — — played by Arian Moayed
• — — played by Karen Allen
• — — played by Sean Kaufman
• — — played by Adam Silver
• Callie — played by Carrie Dimaculangan
• Tony — played by Travis Nelson
• Other Mommy — played by Hayley Spelman