Ruben Carbajal Lopez was a Mexican Luchador, or professional wrestler who is best known under the ring names Adorable Rubí and Rubi Rubalcava / Rubi Rubalcaba. As Adorable Rubí he was one of the pioneers of the Exótico wrestling style, mixing Cross-dressing with wrestling to create a type or wrestling character that was more sexually ambiguous and self-obsessed. The "Adorable Rubí" character was inspired by Dizzy Gardenia, the first successful Exótico character to compete in Mexico. During his career he won the Mexican National Cruiserweight Championship, Mexican National Middleweight Championship and NWA World Light Heavyweight Championship. While he played an effeminate, self-obsessed character where it was implied he was homosexual, it was never revealed if that was Carbajal's personal sexual orientation as well.

The Mexican National Cruiserweight Championship is a national Mexican singles professional wrestling championship controlled by Comisión de Box y Lucha Libre Mexico D.F.. From its establishment in 1983, no one promotion promoted the championship but was shared between several Mexican promotions, and not exclusively by Empresa Mexicana de Lucha Libre (EMLL). In the mid-1990s AAA gained primary booking control of the championship. Being a professional wrestling championship, it was not won legitimately but via a scripted ending to a match or awarded to a wrestler because of a storyline. The official definition of the cruiserweight weightclass in Mexico is between 77 kg (170 lb) and 80 kg (180 lb).