Born and raised in the impoverished neighborhoods of Guarujá, Sao Paulo, Brazil, Charles Oliveira overcame financial struggles, health challenges, and weight management issues to become a UFC Lightweight Champion. Diagnosed with rheumatoid arthritis as a child, Oliveira underwent treatment and returned to sports, finding his passion in Brazilian jiu-jitsu at the age of 12. His exceptional talent in the sport led him to MMA, where he turned pro in 2008 before joining the UFC in 2010. Oliveira's career took a significant turn in 2018 when he moved back to the lightweight division and went on an impressive winning streak, earning him a shot at the vacant UFC Lightweight title against Michael Chandler at UFC 262 in May 2021. Despite a rocky start, Oliveira came back stronger in the second round, knocking down Chandler and securing the victory via strikes. Known as "Do Bronx," a nickname that reflects his connection to his roots in Guarujá, Oliveira continues to celebrate his humble beginnings and has become an inspiration for many with his resilience and unbroken fighting spirit.