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

Who plays who in Little Brother (2026)? Browse a spoiler-free character guide with photos of every major character and the actors behind them, including John Cena, Eric André, Michelle Monaghan.

• Rudd Landy — played by John Cena
• Marcus Pinchel — played by Eric André
• Deirdre Landy — played by Michelle Monaghan
• Josh Landy — played by Christopher Meloni
• Mia — played by Sherry Cola
• Lenore — played by Ego Nwodim
• Olly — played by Caleb Hearon
• Cory Landy — played by Bryce Gheisar
• Shane Landy — played by Pilot Bunch
• Kieran Francis — played by Ben Ahlers
• Ashley — played by Sophia Bunnell
• Nurse Sonj — played by Christina Catechis
• Yayir — played by Brett Azar
• Renaissance Recovery Counselor — played by Brian Keane
• Keith — played by Tony Torn
• Medic Jones — played by Dani Deetté
• Young Marcus — played by Christopher Woodley
• Young Rudd — played by Maximo Salas
• Young Josh — played by Colter Ford
• ER Doctor — played by Eddie Cooper