Mayara Custódio is a jiu-jitsu black belt under Sebastian Lalli, who worked extensively with Leonardo Vieira and Norival Diego Rossi. A former arm-wrestling champion, Custódio first made waves in grappling during her colored belt career in the International Brazilian Jiu-Jitsu Federation (IBJJF) circuit, a time when Mayara conquered World, European, Brazilian, and American National titles.