Breaking Bad extremely playful on set, with Aaron Paul describing him as "a kid trapped in a man's body". Gilligan originally intended for Aaron Paul's character, Jesse Pinkman, to be killed at the end of "Breaking Bad"s first season in a botched drug deal as a plot device to plague Walter White with guilt. However, Gilligan said by the second episode of the season, he was so impressed with Paul's performance that "it became pretty clear early on that would be a huge, colossal mistake, to kill off Jesse". Donna Nelson, a professor of organic chemistry at the University of Oklahoma, checked
Hermanos (Breaking Bad) restaurant, where Gus meets him at a register. Walter hastens to assure Gus that he didn't plant the tracker, showing it still in his pocket, but Gus tells him to "do it." Perplexed, Walter plants the tracker on his way back to his car and leaves with Hank. Later, Walter (on video) and Mike each assure Gus that Hank is acting on his own and not as part of the DEA's investigation, but Mike advises Gus that Hank may pose a problem if Gus and the cartel go to war. Walter warns Jesse (Aaron Paul) about Hank's investigation and again