Gai Maito

Name: Maito Gai 
Age: 26 
Birthday: 01 January 
Zodiac: Capricorn 
Rank: Jounin 
From: Leaf
Students: Rock Lee, Tenten, Hyuuga Neji 
Eternal Rival: Hatake Kakashi 
Calls himself: Konoha's sprouting leaf of acceptance 

Background: Rock Lee's teacher.

The Deal with him: Gai plays a relatively minor role, mainly comic relief and toothpaste endorsement. The 1st time we see him, he engaged in a dramatic embrace with Rock Lee in a picturesque golden sunset with the Sexy soundtrack in the background. The introduction promises much laughter everytime he comes on screen subsequently. 

Most remembered scenes of Gai are when he tries to compete with Kakashi only to get "modern" and "hip" nonchalent responses from his eternal rival and he goes "Oh My GOD!!". 

Gai and Lee's relationship is very strong as the teacher tries his best to train his prized student to be the excellent ninja that Lee envisions himself to be.