David Coburn David Coburn is an actor , voice artist , and singer who appeared as Ensign Brower in the fourth season episode in . He filmed his scenes on Monday on Paramount Stage 9 . He is perhaps best known as the voice behind Captain Planet on the popular animated television series " Captain Planet and the Planeteers " . This series also featured the voices of his fellow TNG performers LeVar Burton and Whoopi Goldberg , as well as Dean Stockwell and Frank Welker . Television career . Coburn made his television debut playing Ted Loomis in a 1979 episode of the CBS situation comedy series " One Day at a Time " , which featured John Putch . He returned to the show in 1981 , reprising his role as Loomis . In 1988 , he appeared on NBC ' s " Rags to Riches " ( with Robert Pine ) and on ABC ' s " Just the Ten of Us " ( in an episode directed by Anson Williams ) . He also guest - starred on " The Munsters Today " ( with Lee Meriwether , Jason Marsden , and John Schuck ) , " Diff ' rent Strokes " , " The Facts of Life " , " 21 Jump Street " , " Who ' s the Boss ? " , and " Growing Pains " . In the role of Walter Potter , Coburn was a series regular on " Harry and the Hendersons " during its first season , as were Bruce Davison and Kevin Peter Hall . Coburn later became a regular on the short - lived UPN series " Live Shot " ( alongside Sam Anderson , David Birney , Bruce McGill , and Jeff Yagher ) . In between these shows , Coburn made a guest appearance on " Fresh Prince of Bel - Air " , the popular comedy series on which James Avery was a regular . After " Live Shot " , Coburn made guest appearances on such shows as " JAG " ( with Jim Fitzpatrick and Stephanie Niznik ) , " " ( with Felecia M . Bell ) , and " The Sopranos " ( with Steven R . Schirripa and Josh Pais ) . Michael Vejar directed Coburn in the 1999 " " movie " " , which featured Tony Todd , Tracy Scoggins , and Scott MacDonald . Coburn played a Minbari ranger in this production . Film work . Coburn was seen in several feature films during the 1980s , the first of which was Richard Fleischer ' s 1980 musical drama " The Jazz Singer " . This was followed with a supporting role in Renny Harlin ' s 1986 thriller " Born American " , which co - starred Thalmus Rasulala . He then appeared in " The Fabulous Baker Boys " ( 1989 ) , along with Albert Hall , Gregory Itzin , Todd Jeffries , and Dakin Matthews . Coburn made an appearance in Oliver Stone ' s 1991 biographical film " The Doors " , in which Mark Moses , Titus Welliver , and Paul Williams also appeared . In 1998 , Coburn starred in the independent comedy film " To Hell with Love " , which won the Feature Film Award at that year ' s New York International Independent Film & Video Festival . He then starred in the 1999 independent comic drama " Screenplay " . More recently he appeared in the crime thriller " Able Danger " ( 2008 ) . Voice - over work . Besides voicing Captain Planet on " Captain Planet and the Planeteers " , Coburn voiced the role of Dan Darret on the short - lived animated series " Pole Position " . He also voiced on the season - long " New Kids on the Block " animated series , while Loren Lester voiced . Coburn and the aforementioned Whoopi Goldberg supplied voices for the animated 1992 television movie " Defenders of Dynatron City " . Both Coburn and Judi M . Durand provided additional voices on the 1995 film " Bad Company " , which starred Frank Langella . There was also the 1999 science fiction family television movie " Can of Worms " , which featured the voices of both Coburn and Malcolm McDowell . In addition , Coburn has provided additional dialogue recording ( ADR ) for several live - action feature films . His credits as part of the ADR " loop group " include " The Cemetery Club " , " My Father the Hero " , " Jackie Brown " , " South Park : Bigger , Longer & Uncut " , " Murder by Numbers " , and " The Devil Wears Prada " . Coburn has also been supplying voices for video games , most notably the 2004 hit " Grand Theft Auto : San Andreas " . Clifton Collins , Jr . , Andy Dick , and Wil Wheaton provided voices for this game , as well .