Ronaldo Valdez, born James Ronald Dulaca Gibbs, was a highly-regarded Filipino actor whose illustrious career spanned almost five decades. He initially gained recognition for his leading man roles and later became renowned for his portrayal of paternal figures and antagonists in both TV and film. Valdez's breakthrough came in the 1969 movie The Mad Doctor of Blood Island after being discovered by Dolphy. He continued to captivate audiences with his performances in various films and TV dramas such as Mula sa Puso, Ang Munting Paraiso, and Los Bastardos. Valdez's remarkable talent and versatility led to numerous accolades, including all four major acting awards in the Philippines for his role in May Minamahal. Beyond his professional success, he was a loving husband to Maria Fe Ilagan and a doting father to their children, Janno and Melissa, both of whom followed in his footsteps as actors. Tragically, Valdez passed away at the age of 76 in December 2023. His legacy lives on through his extensive filmography and the profound impact he made on the Philippine entertainment industry.

Ronaldo da Costa, born on June 7, 1970, is a renowned Brazilian former long-distance runner and a former world-record holder for the marathon distance. In 1998, he made history by breaking the ten-year-old marathon world record in Berlin, surpassing the previous record set by Belayneh Densamo from Ethiopia. Notably, da Costa was the first man to officially reach the 40 km mark in under two hours during his record-setting run. His incredible athletic prowess and determination solidified his status as a national hero after winning the prestigious São Silvestre Brazilian road race in 1994. Furthermore, he showcased his versatility by triumphing in the 5,000 m at the Ibero-American Championships in the same year. Despite achieving top-20 results in several marathons from 1997 to 2003, da Costa's most notable accomplishment remains his record-breaking run. His remarkable contributions to the world of long-distance running have left an indelible mark on the sport and continue to inspire aspiring athletes globally.

Ronaldo Cantero (unknown – 9 June 2006) was a highly accomplished Paraguayan chess player, renowned for his exceptional skills and strategic prowess. Throughout the mid-1950s to the late 1960s, Cantero dominated the Paraguayan Chess Championship, securing victory an impressive eight times in the years 1954, 1955, 1956, 1957, 1958, 1961, 1962, and 1965. His outstanding performance extended to international chess tournaments in Latin America, where he notably achieved a remarkable 3rd place at the prestigious Montevideo tournament in 1956, outshining notable Grandmasters. Cantero's dedication to the sport also led him to represent Paraguay in the Chess Olympiads, contributing to the country's success in the global chess arena. His enduring legacy continues to inspire aspiring chess enthusiasts and remains an integral part of Paraguay's rich chess history. For further insights into Cantero's remarkable career and game highlights, his player profile and games can be explored on Chessgames.com and 365chess.com.