Tsunade

Tsunade the current Hokage (the 5th) is part of the 3 Sennins. She also was a former student of the third Hokage and is currently Sakura's teacher. She is the medical genius that started the grouping of medical ninjas in mission teams. She is also the infamous gambler; she is a gambling addict that loses in all situations. Don't let her good looks fool you though, she may look like she's 25 but she's actually over 50 years old!!!! (What a looker!!!)