Age 26 years old(born on October 21)
Hair Light Gray
Height 180 cm
Weight 69.4 kg
Blood Type AB
A Chunin level ninja, Mizuki was a former teacher at the Ninja Academy. After Naruto fails to graduate from the Academy, Mizuki tells Naruto that there is another way to graduate, and tricks him into stealing the forbidden scroll of sealings for him.
But as fate would have it, Mizuki shows up and pins Iruka to the wooden shack behind him. Mizuki then tells Naruto the truth about his past, the fact that he is the Demon Fox. Mizuki then attempts to kill both Naruto and Iruka, but luckily, Naruto uses the skill he learned from the scroll, Shadow Clone Jutsu, to create clones of himself which defeat Mizuki easily.
After that incident, Mizuki was imprisoned in the Konoha Strict Correctional Facility. Mizuki later on leads a prison revolt and sends the brothers, Fuujin and Raijin, to Orochimaru. During his escape, Mizuki remembers back to when Orochimaru gave him a cursed seal after a mission in which he killed his comrade. He was defeated by Naruto's Rasengan.
Mizuki is from the Village Hidden in the Leaves, and his technique is the Transformation Jutsu.