Name: 小山慶一郎 (こやま けいいちろう) / Koyama Keiichiro
Nicknames: Koyama, Keii or Kei-chan, Koyamacchi
Profession: Actor and singer
Birthdate: 1984-May-01
Birthplace: Tokyo, Japan
Height: 177cm
Weight: 59kg
Star sign: Taurus
Blood type: O
Family: Older sister
Talent agency: Johnny's Entertainment
J-Pop groups: BAD, J-support, K.K.Kity, NEWS
School: Meiji University major in Asian History
Speciality: Baseball
Dramas:* Lucky Seven (Fuji TV, 2012)
* 0 Goshitsu no Kyaku (Fuji TV, 2009)
* Loss Time Life as Tsunami Kota (Fuji TV, 2008, Story 2)
*
Yukan Club as Kariho Yuya (NTV, 2007, ep6)
* Hanayome wa Yakudoshi as Azuchi Jiro (TBS, 2006)
*
Kurosagi as Tanabe Satoshi (TBS, 2006, ep2)
* Ns' Aoi as Kitazawa Takeshi (Fuji TV, 2006)
* Gekidan Engimono
Unlucky Days - Natsume no Mousou as Sanada (Fuji TV, 2004)
* Kanojo ga Shinjyatta (NTV, 2004)
Endorsements:* RUSS-K
* LAWSON (2008)