Shiranui Genma is a special jounin of the Hidden Leaf Village. He was also the proctor of the final rounds of the chuunin exams. When the Hidden Sand and Hidden Sound Villages started to Invade the Hidden Leaf Village, he helped fight them off. The Hidden Sand jounin Baki decided to fight Genma one on one. Genma was able to stall him for a while, long enough for Sasuke to go after Gaara.
Then on an assignment, Genma and Raidou fought against the Sound Four. They held them off for a while. The four sound shinobi realized that they wouldn't be able to beat them at their level quick enough, they activated their cursed seals. The Sound Four beat Genma and Raidou and got away. Genma had serious injuries. Tsunade and Shizune helped treat his wounds.