Mysterio Sr. made a significant mark in the world of professional wrestling. He started his career in January 1976 and participated in various competitions, including Pro Wrestling Revolution, Tijuana Wrestling, and the World Wrestling Association (WWA).

He clinched victory in several contests, and considered one of the pioneers of Mexican wrestling. Among his winning championships, the WWA World Junior Light Heavyweight Championship and the WWA Tag Team Championship are prominent.

The wrestling legend, commonly known as Rey Mysterio Sr. to distinguish him from his nephew, played a significant role in the Mysterio wrestling legacy, with both his grand-nephew, Dominik, and grand-niece, Aalyah, making appearances in WWE.

The news of Mysterio Sr. s passing comes just weeks after the death of his brother, Roberto Gutierrez, Rey Mysterio Jr. s father and Dominik s grandfather, who died on November 17 at the age of 76.

Following his father s death, Rey Mysterio Jr. shared an emotional tribute on Instagram: “You did more than set the example of how to love & maintain a strong marriage and father 4 boys, you were the example and passed every single time until your death with flying colors. Excellent husband, loving father, beautiful grandfather, incredible son & brother, and amazing father in law."

Fans and colleagues on social media have offered their condolences to his family and shared cherished memories of the Mexican wrestling icon.