Person

Richard O'Brien

19 credits in the catalogue: acting, writing, sound.

On the wikisPhineas and Ferb Wiki

Acting

The Rocky Horror Picture Show1975Riff Raff
Jubilee1978John Dee
Flash Gordon1980Fico
Shock Treatment1981Dr. Cosmo McKinley / Kitchenware Announcer (voice)
The Wolves of Willoughby Chase1989James
The Crystal Maze1990Host
Spice World1997Damien
Dark City1998Mr. Hand
EverAfter1998Pierre Le Pieu
Dungeons & Dragons2000Xilus
Phineas and Ferb2007Lawrence Fletcher
Night Train2009Mrs. Froy
Phineas and Ferb the Movie: Across the 2nd Dimension2011Lawrence Fletcher / Lawrence-2 (voice)

Writing

The Rocky Horror Picture Show1975Screenplay
The Rocky Horror Picture Show1975Lyricist
The Rocky Horror Picture Show1975Theatre Play
Shock Treatment1981Screenplay
Shock Treatment1981Lyricist

Sound

Shock Treatment1981Music