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At 15 Galvão was promoted to blue belt, winning the 2017 IBJJF Kids Pan a month later, during a tournament known as Copa Podio Orange League Event where juveniles faced experience grapplers, Galvão submitted Leandro Rounaud, a former IBJJF Manaus Open adult black belt champion. In one of those matches, 13-year-old green belt Galvão submitted a 25-year-old brown belt with proven competition record. The Galvão siblings became known around the regional competition circuit for submitting older and heavier opponents during "superfights". In July 2015 Galvão and his sister left the country for the first time, to participate in the American National Jiu-Jitsu Championship taking place in Las Vegas. At the 2015 Amazonian Jiu-Jitsu Championship, 11-year-old Galvão submitted all his opponents winning an Amazon Championship title the for 15th time. Together with his sister Sammi, the siblings quickly conquered all the main competitions in the Amazonas and Brazil. In February 2011 his father started Projeto Nandinho a program for low-income children and adolescents, looking to train in BJJ, the academy was at first located in his garage, later becoming part of Dream Art Project, another program for young athletes supported by Alliance Jiu Jitsu in the region of Amazonas. A few years later when he was 10 years old, Galvão started training in Luta Livre Esportiva (also known as Brazilian catch-wrestling), Galvão also trained Judo and Freestyle Wrestling. Coached by his father, Galvão first BJJ competition took place at the age of 4. Galvão's grandfather was a well known kung fu instructor. His father Melquisedeque Galvão, known as Melqui Galvão, was the chief investigator of the special anti- kidnapping squad of the Manaus Police Department, and a Brazilian jiu-jitsu (BJJ) and Luta Livre black belt.
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Micael Ferreira Galvão was born on 8 October 2003 in Manaus, Brazil. In 2022 Galvão won the 2022 IBJJF World Jiu-Jitsu Championship before testing positive for a banned substance and receiving a one-year suspension ban. A highly decorated athlete competing since childhood, Galvão was promoted to black belt in 2021, at the record age of 17, less than 3 years after reaching blue belt. Micael Ferreira Galvão, commonly known as Mica Galvão, (born 8 October 2003) is a submission grappler, Luta Livre and Brazilian jiu-jitsu (BJJ) black belt competitor from the Brazilian state of Amazonas.
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