Greg was supposed to be in only one episode of
Dark Angel, but they liked him enough that they used him in 9 out of 20 first season episodes before his character was killed heroically in the first season finale. Greg and the rest of the cast didn't see the script for the finale until they were actually shooting it, but he says he wasn't surprised to learn that they planned to kill him off. Executive Producer
James Cameron told him personally that it was no reflection on Greg, just that it was the best choice for the ongoing storyline, and Greg agreed that this was the strongest and most appropriate choice for his character, since having him come and go all the time had much less impact.