*All playwright info and photos sourced from wikipedia.
Richard Smith (born 25 March 1942), known professionally as Richard O'Brien, is an English-New Zealand actor, writer, musician and television presenter. He wrote the musical stage show The Rocky Horror Show in 1973 which became an international success and has remained in continuous production. He also co-wrote the screenplay of the film adaptation The Rocky Horror Picture Show, released in 1975, appearing in the film as Riff Raff. O'Brien wrote Shock Treatment in 1981 and appeared in the film as Dr Cosmo McKinley.
O'Brien played the role of Gulnar in the ITV series Robin of Sherwood (1984-1986), and presented the television show The Crystal Maze for Channel 4 (1990-1993). He appeared in the film Spice World (1997) and was also the voice of Lawrence Fletcher, the title characters' father in Phineas and Ferb (2007-2015).