Age: 19 (SW1); 22 (SW3)
Birthdate: January 3, 1903
Place of Origin: Tochigi, Japan
Height: 176 cm (5'9")
Weight: 65 kg
Blood type: A
Martial Talents: Kenjutsu, twin-sword-style
Koubu-Kai/Jinbu/Tenbu/Koubu Nishiki Unit/Koubu-F/Koubu-F2
Color: White
Weapon: Two ōtachi (medium-length Japanese swords)

Ichiro Ogami was chosen to head the Hanagumi when he proved himself capable during a test of a Koubu prototype at sea. Kayama was with him during that time, but eventually Ougami was sent to work with the Hanagumi, as Kayama worked with the Tsukigumi. In the TV series, he temporarily assumed the role of Assistant Commander.

(Source: Wikipedia, edited)