According to an interview with Keegan, he did voiceover work as a child. His credits included G.I. Joe, The Littles (TV series) and Over The Top. While Keegan voiced various characters on G.I. Joe, his primary character on The Littles was Henry Bigg. Keegan said "the voice-over work is probably the most fun because I'm a huge cartoon fan."  He also had a very brief appearance on the long running CBS daytime drama The Young and the Restless in 1983 as Phillip Chancellor III.