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Character actor Lou Wagner has been visible in movies and television since the mid-'60s, but his most visible big-screen part was played under such heavy makeup that audiences can be forgiven for not remembering him. Wagner was one of a handful of actors carried over from the original Planet of the Apes (1968) to its sequel, Beneath the Planet of the Apes (1970), playing Lucius, the young assistant to chimpanzee scientists Cornelius (Roddy McDowall and David Watson) and Zira (Kim Hunter) in the two movies. Born in San Jose, CA, in 1948, Wagner's short stature (reportedly five feet, two inches) and youthful features made him a natural to play young teenagers, and across the late '60s and into the start of the 1970s he often did just that, on series such as Lost in Space and Dragnet, in addition to appearances in feature films, including Hello Down There (1969) and Airport (1970, in which he had three very funny scenes as a know-it-all boy passenger). In his television debut in the Lost in Space episode "The Haunted Lighthouse," Wagner managed to squeeze some pathos out of the role of a lonely alien boy with a secret, while on the Dragnet episode "The Big Departure" he made the most of his role as a pseudo-intellectual teenage rebel. By the 1970s, in addition to showing up in Conquest of the Planet of the Apes, Wagner had settled into character and supporting roles, mostly in television, with the occasional movie role here and there. He has worked regularly into the 21st century, with an occasional bigger part to highlight his career, such as his starring role in Starry Night (1999).