Rey Mysterio and Eddie Guerrero's friendship is well-documented, with the two stars being a big part of each other's journeys in wrestling. Unfortunately, the Latino Heat passed away 20 years ago on November 13 at the age of 38.He is still fondly remembered as one of the greatest WWE Superstars of all-time, and Mysterio recently penned an emotional tribute to Guerrero in The Players' Tribune. In it, he claimed that he would always be his little brother:"I swear: I could live another 50 years — and when it comes to our friendship, I’d still be Little Bro. I’m forever your little bro."Upon reading Mysterio's open letter, people might be wondering if the two stars are indeed brothers in real life. While the bond between the two WWE icons is as close to brotherhood as it gets, they are not related by blood.Mysterio and Guerrero had several incredible matches over the years, and several wrestlers still pay tribute to The Latino Heat in the ring with the Three Amigos and the Frog Splash.Eddie Guerrero's daughter pays tribute to him 20 years after his passingEddie Guerrero's youngest daughter, Kaylie, recently paid tribute to her father on his death anniversary. She uploaded a heartfelt message on her X/Twitter account, revealing how she tries to recall the happy moments they shared together:"This day never gets easier, even after all of these years… When I miss you, I try and think of all the happy moments we had together… ❤️🙏🏼🇲🇽 Like when you protected me from the “scary foot bath,” during my first nail salon visit. 😆 I love and miss you forever & always."At the end of October, it was revealed that Kaylie's sister, Sherilyn Guerrero, would begin her pro wrestling journey as part of Reality of Wrestling's school in Texas.