Gerald Rainier

Gerald Rainier is the secondary antagonist of the 2018 horror film, Insidious: The Last Key. He is the abusive father of Elise Rainier and husband of Audrey Rainier.

He is portrayed by Josh Stewart.

History
In 1953, Gerald is an alcoholic who works as a prison executioner. Elise claims to see the ghosts of the prisoners that have been executed, alarming Gerald. He appears to be terrified of Elise's ability to talk to spirits and would punish her if she ever talked to any ghost. One night, Elise encounters a ghost in their room. Her brother Christian looks for the whistle their mother gave them to call for help, but lost it. Gerald hears the kids screaming and furiously walks up stairs with a cane in his hand. He grabs Elise by the neck and asks her if she saw a ghost. Elise replied that she did and they are everywhere.

Angered, Gerald beats Elise in the head with a cane and locks her up in the basement, which Elise is scared off. Elise come across the red door to The Further and a voice tells her to open it. When she did, she gets possesed by KeyFace. Audrey hears noises coming from the basement and ventures to see what was going on. Elise (under KeyFace's influence) strangles her mother to death, then Gerald ventures down the basement to see his dead wife and possesed daughter fall to the ground. Gerald grieves over Audrey's body and began to hate Elise even more.

In the 1960's, a teenage Elise sees Anna (who was locked in a room by Gerald) in the laundrey room. When Gerald walked in, he saw Anna but pretended he saw nothing. After Elise stood up to Gerald and ran away, Gerald brutally murders Anna and puts her body in a suitcase in the ventilation shaft. KeyFace manipulated Gerald by feeding on the fear and hatred from the women he killed.

When Gerald died, his soul has been sent to The Further as punishment for his sins. After Elise enter the prison realm, KeyFace encourages her to hurt Gerald as revenge for years of abuse, but is stopped by Imogen (who entered The Further) and refuses to let KeyFace feed on any more hatred. KeyFace attacks Elise, but just when he was about to kill her, Gerald emerges in front of Elise and is stabbed by KeyFace. Gerald apologies to Elise for his abuse before turning into dust.