Archive · 7 Oct 2026
How Arabella Olivia Clark Became Bela in Other Mommy
Other Mommy is a horror movie about a girl named Bela.
A strange being appears in her home and looks like her mother.
Arabella Olivia Clark plays Bela.
The director, Rob Savage, said finding the right child actor was very important.
Bela is in almost every scene, so the actor needed to handle many emotions.
During auditions, Savage invited children to bring a favorite toy or game.
Clark brought a toy opossum and could switch from playing to acting when asked.
The film is based on a book by Josh Malerman.
It is scheduled to come to cinemas on 9 October 2026.
Arabella Olivia Clark plays Bela in the horror film Other Mommy.
Director Rob Savage said the demanding role required a child actor with emotional range.
Savage recalled that Clark brought a toy opossum to auditions and could quickly shift into a scene.
The film is based on Josh Malerman’s bestselling novel and follows a girl whose home is visited by an entity resembling her mother.
Other Mommy is scheduled to arrive in cinemas on 9 October 2026.
- Who
- Arabella Olivia Clark was cast as Bela; director Rob Savage discussed the casting.
- What
- The article describes the casting of the child actor in the horror film Other Mommy.
- When
- The film is scheduled to arrive in cinemas on 9 October 2026.
- Where
- Cinemas; no specific location is given.
- Why
- The role required a child actor able to carry a story told from Bela’s perspective and appear in almost every scene.
Casting challenge
Director’s assessment
Finding the right child actor
Casting challenge
The role was unusually demanding: Bela is seven, appears in almost every scene, and the story is told from her perspective.
Director’s assessment
Director Rob Savage said Arabella Olivia Clark combined natural acting ability with a playful, energetic personality and could move quickly between play and performing.
- Film
- Other Mommy
- Cinema release
- 9 October 2026
- Bela
- Played by Arabella Olivia Clark
- Director
- Rob Savage
- Producers
- James Wan and Blumhouse Atomic Monster
- Source material
- The bestselling novel by Josh Malerman
- Casting detail
- Savage said Clark brought a toy opossum to auditions.