|This article is about an actor in the Kamen Rider Series.|
In Kamen Rider, he portrayed Jin Takayama/Kamen Rider Amazon Alpha in Kamen Rider Amazons. He later portrayed Bahato/Kamen Rider Falchion in Kamen Rider Saber: The Phoenix Swordsman and the Book of Ruin, and reprised his role in the series starting with Episode 34.
Tanaguchi had been interested in modeling since his high school years, though did not initially pursue it after graduating as he went to work in a corporate office. After realizing he wanted to try it out, he quit his corporate job at the age of 19 and debuted as a magazine model. When he wasn't getting enough work, he transferred into his current acting agency at the recommendation of a friend. His debut role was in GoGoFive as Nagare Tatsumi.
- Taniguchi is colorblind, and has stated that this affects his ability to play the game PuyoPuyo.
- Taniguchi received criticism for his role in GoGoFive by its script-writer Yasuko Kobayashi. As a result, he left his role with regrets and was happy to quell that regret during his return to Tokusatsu with Kamen Rider Amazons.
- Kyukyu Sentai GoGoFive (1999-2000) - Nagare Tatsumi/GoBlue
- Kamen Rider Amazons (2016-2017) - Jin Takayama/Kamen Rider Amazon Alpha
- Kamen Rider Saber (2021) - Bahato/Kamen Rider Falchion
- Kamen Rider × Super Sentai: Chou Super Hero Taisen (2017) - Kamen Rider Amazon Alpha (voice only)
- Kamen Rider Amazons THE MOVIE: The Last Judgement (2018) - Jin Takayama/Kamen Rider Amazon Alpha
- Kamen Rider Saber: The Phoenix Swordsman and the Book of Ruin (2020) - Bahato/Kamen Rider Falchion
- Kamen Rider Zi-O: Final Stage (2020) - Kamen Rider Amazon Alpha (voice only)