Chris knew how critical Luke would be to the show's coherence, and made sure Luke was given the funniest lines in the entire show.
For the first season, Luke was keyed against a black background like most others were. He wore a cheap black hair wig, and was rendered in post by Nick to look like an emo version of Zordon. For season 2, he was given a pair of glasses and a slightly more expensive emo wig to wear, and was keyed against a brown screen. A simple photo of him was used for his character's CGI render in the 2015 special, since he was unavailable for filming.