Agent Richard07 wrote:
^ Jesse was slated to be killed off in season 1, but they loved Aaron Paul and his character so much that they kept him on.
It helped that the writers' strike happened before they could produce all ten episodes they had initially planned for the first season. Over the hiatus, the writers reconsidered their plans for the show, and made a few adjustments. Not only did Jesse live, but Tuco -- who they had intended to be a major antagonist -- was killed when Raymond Cruz asked to appear in fewer episodes in season two.