Season 3

Unproduced season
In the DVD commentary for "Freak Nation", the series finale, Charles H. Eglee explained what had been planned for season three. The intention was to bring together the storylines of seasons one ("Manticore") and two ("Breeding Cult") and reveal the mythology of Dark Angel. The season would reveal that thousands of years ago, Earth passed through a comet's tail which deposited viral material that killed 97% of the human race. The breeding cult preserved the survivors' genetic immunity, so that when the comet returned, only members of the cult would survive. Sandeman, a cult member and Max's creator, betrayed the cult and decided to give this genetic immunity to the rest of humanity through Max, who would be the savior of the human race. There were multiple ideas on how to spread Max's immunity, including an air burst that would disperse the antibody through the atmosphere, or attaching the immunity to a common cold virus (Eglee detailed how a scene would show Original Cindy sneezing as part of the beginning of the immunity spread). This storyline is expanded upon in the final Dark Angel novel After the Dark though when the comet returns nobody falls ill, and it is believed that the cult simply had a false prediction.