Rey Misterio Sr., the legendary Mexican wrestler and uncle of WWE superstar Rey Mysterio Jr., passed away on December 20, 2024, at the age of 66.

His family and the Mexican wrestling promotion Lucha Libre AAA Worldwide confirmed his death.

Born Miguel Ángel López Díaz, Rey Misterio Sr. was a prominent figure in Mexico’s lucha libre community.

Throughout his nearly five-decade career, he made significant contributions to the sport by competing in various organizations such as Pro Wrestling Revolution, Tijuana Wrestling, and the World Wrestling Association (WWA).

In addition to his accomplishments in the ring,Rey Misterio Sr. was known for mentoring younger wrestlers. He played a pivotal role in shaping the careers of wrestling stars such as his nephew Rey Mysterio Jr., as well as training legends like Konnan, Psicosis, Halloween, and Damian 666.

While the cause of his death has not been officially revealed, his passing comes shortly after the death of Rey Mysterio Jr.’s father, Robert Gutierrez, earlier this year.

Misterio’s daughter, Aalyah Gutierrez, paid tribute to her late uncle on social media, expressing her deep gratitude.

“Eternally grateful for you,” she wrote. “Without you, my dad wouldn’t be the person or fighter he is today. Rest in peace, uncle.”