Kristen Martin is a Brazilian Jiu Jitsu black belt under Hannette Staack and André Terêncio, being one of the main figures of the Brazil 021 School of Jiu-Jitsu competition team. Martin made waves in the lower belt divisions of the sport, a time when she first brought the attention of mainstream media to her performances, particularly after winning IBJJF World and Pans titles as a brown belt. Kristen has since cemented their status one of the top grapplers of her generation.