Child actor Christian Cousins, who starred alongside Arnold Schwarzenegger in the 1990 action comedy “Kindergarten Cop,” has died, his family said. He was 43 years old.

Cousins “had been very sick with liver disease” before he died on Oct. 20, his half-brother Jonas Roeser wrote in an Instagram post, which also included a series of photos of the late child actor. He remembered Cousins as “a character, full of passion and energy, with big stories and even bigger dreams” before reflecting on their relationship.

Roeser revealed that Cousins and his twin brother, Joey, were his siblings through their father, but he didn’t meet until them until he was in college. Despite growing up in different states, Roeser was still able to watch his brothers on TV and in the movies, he said.

Cousins, who shared his roles with his twin, made his television debut in a 1988 episode of the MIchael Landon drama “Highway to Heaven.” The boys went on to star as Dominic in “Kindergarten Cop” before landing the role of Bobby Gibson Ewing on “Dallas” spinoff “Knots Landing” from 1987 to 1992. Their other credits include “Critters 3” in 1991 and “Intruders” in 1992, with their last listed appearance in the 1995 movie “Twin Sitters.”

“But those roles are only a small part of how I’ll remember Christian,” Roeser noted.

“It brings me comfort to believe he is now in heaven with his mother, free from the pain he was carrying,” he continued. “Rest easy, Christian. I hope your soul is at rest and that you’ve found peace. You are my brother and you will be missed.”

Cousins and his twin brother were born in March 1983 in Orange County, California.

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