Makoto Kawamoto from Rurouni Kenshin
YouTube - Rurouni Kenshin opening 2

Sobakasu or Freckles from Kenshin
YouTube - rurouni kenshin opening (english)

Tenchi in Tokyo opening
YouTube - Tenchi in Tokyo - Opening

Tenchi Universe opening
YouTube - Tenchi Muyo! Tenchi Universe Seson opening in English