Karen Antunes is a Brazilian jiu-jitsu black belt under Mayko Araújo, being also one of the top athletes in the sport's female lightweight class. Antunes paved her way to the big leagues of the sport in the lower belt divisions, where she conquered 3 IBJJF world titles (1x gi and 2x no-gi) among many other important placements. However, it was her performance at the prestigious Five Super League tournament on August 2015 that put her on the map of the mainstream of BJJ by defeating former world champions Luiza Monteiro and Nijah Rollins on her way to the final.