Guy-sensei: known simply as “Guy-sensei” to his three ninja-in-training, he is Kakashi’s long-standing rival, and is also remarkably strong. He excels Kakashi in speed, but to the viewer’s knowledge, nothing else. He is very supportive of his students, and is known to be ridiculously comical at times.
First Manga Appearance: Chapter 38
A Jounin master, he is the leader of Hyuuga Neji, Rock Lee and TenTen. Gai considers himself to be the eternal rival of fellow Jounin master Hatake Kakashi. Gai possess a strong fighting spirit and is prone to challenging Kakashi, though Kakashi often is aloof to Gai's boastful rantings. Gai has tried to pass on his strong fighting spirit to his pupil Lee. To that end his has taught Lee advanced forbidden Taijutsu techniques only to be used when Lee has to protect a precious person. Though Gai appears strict with Lee and scolds him harshly when he acts incorrectly, he also is very emotional and doesn't hide his sympathetic feelings for Lee's growth into a man he can be proud of.