LA Times: One of the things that you brought to Worf was an endless but endearing exasperation. Was that there on the page, or did you add that as an actor’s choice?
Michael Dorn: That was totally by my invention. I realized by looking at the people on the bridge that they’re all great friends and they’re out in space and they’re traveling, and it was all so pleasant. I decided that I wanted to be the opposite. I made my guy the guy that was pissed at everything. If someone looked at him sideways, he was mad. So that’s where they got all that. You know, I really gravitated a lot towards Worf. He was a good guy; he was honorable and brave; he evolved; he didn’t stay stagnant over the years. I liked that. The loyalty and honor were very appealing to me. The other thing too is that it’s not a blind loyalty to anyone or anything. And he’s right all of the time — all of the time — because he’s always true to himself."
I always assumed that Worf was intentionally written as the curmudgeonly African-American voice on The Next Generation. From this interview (not just the quote above) I get the feeling that much of what I liked about the writing of the character was actually improvised by Dorn.