Ichirou Mizuki

Toshio Hayakawa (早川 俊夫), better known by his stage name Ichirou Mizuki (水木 一郎), is a Japanese vocalist, lyrist, composer, voice actor and actor best known for his work on theme songs for anime and tokusatsu.

He also guest starred as Ichirouta Oonuki in episodes 23 and 24 of Kamen Rider W with fellow musicians Aya Kamiki and TAKUYA, where they were judges on the the Fuuuuuutic Idol competition.

Kamen Rider

 * Kamen Rider Christmas (Insert song)

Kamen Rider V3

 * Shōnen Kamen Rider Tai no Uta (Ending theme 1)

Kamen Rider X

 * Set Up! Kamen Rider X (Opening theme)
 * Ore wa X X Rider (Ending theme)

Kamen Rider Stronger

 * Kamen Rider Stronger no Uta (Opening theme)
 * Kyō mo Tatakau Stronger (Ending theme 1, duet with Mitsuko Horie)
 * Stronger Action (Ending theme 2, duet with Mitsuko Horie)

Kamen Rider (Skyrider)

 * Moero! Kamen Rider (Opening theme 1, duet with Kōrogi '73)
 * Otoko no Na wa Kamen Rider (Opening theme 2)
 * Haruka naru Ai ni Kakete (Ending theme 1, duet with Kōrogi '73)
 * Kagayake! Hachinin Rider (Ending theme 2, duet with The Chirps)

Kamen Rider Super-1

 * Junior Rider Tai no Uta (Ending theme 2, duet with the Columbia Yurikago-kai and Kōrogi '73)