Cooper Koch starred in Monster: The Story of Lyle and Erik Menendez, who spoke to the real-life other party after a Los Angeles judge recently reduced the life sentence of the Melendez brothers.

“I’m so grateful for this,” Koch said of his resentment at the Monster FYC event on Tuesday. “So did Eric (Menendez) and I spoke to him yesterday and he was excited.”

Koch went on to say that the “most inspiring thing” he heard from Erik Menendez was his passion for what he planned to do after leaving, including efforts “a lot of changes in the prison system.”

"He will be a champion of other people who have LWOP, and it's a life without parole," Koch explained. "His life will revolve around changes in the prison system, and I just think that's so beautiful."

Koch shared that Erik Menendez hopes that if he and his brother are released from prison, “In the past decade, people look back and they say, ‘We did make the right decision. Thank God, we let them go.’”

The ruling left Erik and Lyle hoping to be released 35 years after being released for murdering their parents in 1989.

Los Angeles County Superior Court Judge Michael Jesic proposed reducing the original sentences of the Menendez Brothers to 50 years. Since they were no more than 26 years old at the time of the crime, they have now shot parole under the California Young Criminal Law. However, the brothers still have to release the National Parole Commission nod.

Ryan Murphy's public interest in the case has intensified in the September 2024 release of the "monster" series about murders and trials.

District Attorney George Gascón proposed reducing his sentence to 50 years in October. However, he lost to Nathan Hochman, who withdrew his office's request for a reduction in sentencing.

Criminal justice reformer Gascón found that the brothers recovered after falling behind in prison 35 years. The Menendez family argues that new evidence supports the claim that the brothers were sexually abused by their fathers and that attitudes towards abuse have developed over the past three decades.

Hochman said the brothers did not admit that their claims of self-defense were "fabricated" and therefore were not responsible for the crime.

Koch visited his brother in prison with Kim Kardashian in September. "We just looked at each other and hugged immediately," the actor said of Erik. "He was so friendly. Lyle, I had to hug both of them, just present. They were such people. They did a lot of work in prison. Erik taught meditation and speech classes, and they were doing this Greenspace project to improve the prison venue. It was amazing."

Koch also said he had spoken to Erik for the first time the night before Monsters premiered on Netflix.