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Ryuji Sainei
さいねい 龍二
Sainei Ryuji at the Fanmeeting event of Vietnam Toy Show on December 24, 2023
Born	(1981-10-08) October 8, 1981 (age 43) Higashihiroshima, Hiroshima, Japan
Other names	Ryuji Sainei (載寧 龍二)
Occupation	Actor
Years active	2002-present
Height	1.81 m (5 ft 11 in)

Ryuji Sainei (載寧 龍二, Sainei Ryūji), born on October 8, 1981, in Higashihiroshima, Hiroshima, Japan) is a Japanese actor, best known for his role as Banban "Ban" Akaza/Deka Red in the 2004 Super Sentai series Tokusou Sentai Dekaranger. He is currently a freelance actor but was affiliated with Horipro until December 31, 2014. On April 1, 2015, he changed his name to "さいねい 龍二", the same reading.

• Gokusen (2002)
• Gokusen Special (2003)
• Tokusou Sentai Dekaranger as Banban "Ban" Akaza/Deka Red (2004)
• Tokusou Sentai Dekaranger: Deka Red vs. Deka Break as Banban "Ban" Akaza/Deka Red (2004)
• Haruka 17 (2005)
• Fugo Keiji (2005)
• Fugo Keiji 2 (2006)
• Ns' Aoi (2006)
• Koi no Kara Sawagi Drama Special Love Stories IV (2007)
• Tsubasa No Oreta Tenshitachi 2 (2007)
• Sennyu Keiji Ranbo 2 (2007)
• Nanase Futatabi (2008)
• Fujoshi Deka (2008)
• My Girl (2009)
• Kaizoku Sentai Gokaiger as Banban "Ban" Akaza/Deka Red (episode 5 guest) (2011)
• Unofficial Sentai Akibaranger as himself/Banban "Ban" Akaza /Deka Red (episode 2 guest) (2012)
• Tokusou Sentai Dekaranger: 10 Years After as Banban "Ban" Akaza/Deka Red (2015)
• Uchu Sentai Kyuranger as Banban "Ban" Akaza/Deka Red (episode 18 guest) (2017)

• Motorcycle (2002)
• Twilight (2003)
• Bo Taoshi! (2003)
• Tokusou Sentai Dekaranger The Movie: Full Blast Action as Banban "Ban" Akaza/Deka Red (2004)
• Tokusou Sentai Dekaranger vs. Abaranger as Banban "Ban" Akaza/Deka Red (2005)
• Chou Ninja Tai Inazuma! as Kuratanomiya (2006)
• Nekomekozo (2006)
• The Prince of Tennis as Keigo Atobe (2006)
• Drift 2 (2006)
• カチコミ刑事〜オンドリャー！大捜査線 心斎橋を封鎖せよ〜　(2006)
• Mahou Sentai Magiranger vs. Dekaranger as Banban "Ban" Akaza/Deka Red (2006)
• Chou Ninja Tai Inazuma!! SPARK as Kuratanomiya (2007)
• Kamen Rider Wizard in Magic Land as Captain of the Guards (2013)
• The Blood of Wolves (2018), Kikuchi^[1]
• Last of the Wolves (2021), Kikuchi^[2]

• Saiyuki: Go West as Cho Hakkai (2008)
• Saiyuki: Dead or Alive as Cho Hakkai (2009)

• Power Rangers S.P.D. as Jack Landors/SPD Red Ranger (2005, 2011)

• Official blog (in Japanese)
• Official profile at Horipro at the Wayback Machine (archived July 23, 2014)