During the 2018 Fantastica Mania tour of Japan, Último Guerrero and Gran Guerrero teamed up for the first ever CMLL Brothers tag team tournament. The Guerreros defeated Ángel de Oro and Niebla Roja in the first round and then Dragon Lee and Místico to win the tournament. On July 1, 2018 "Los Guerreros", in this case Último Guerrero, Gran Guerrero and Euforia, defeated the Sky team (Místico, Valiente and Volador Jr.) for Guerrero's fourth CMLL WOrld Trios Championship reign. During their reign, "Los Guerreros" started a storyline feud with "The Cl4n" (Ciber the Main Man, The Chris and Sharlie Rockstar), which included The Cl4n defeating "Los Guerreros" at the CMLL 85th Anniversary Show, and lost the championship back to "Los Guerreros" two weeks later. On October 16, 2018, Guerrero defeated Diamante Azul to win the CMLL World Heavyweight Championship for a second time.