Jesse Pinkman Breaking Bad
Jesse is unaware that Walt stood and watched while Jesse's girlfriend Jane choked to death on her own vomit during a heroin overdose — a death for which he initially blames himself. After a stint in rehab, he emerges clean and sober, but still tinged by guilt. "I'm the bad guy," he tells Walt.
When Walt briefly retires from methmaking, Jesse cooks solo in their RV. To lure Walt back, their distributor Gus Fring purchases meth from Jesse, in a transparent (and effective) effort to arouse Walt's professional jealousy. Relations between the partners deteriorate further when Hank very nearly gets his hands on the RV — and almost discovers his own brother-in-law's secret criminal enterprise in the process. Walt engineers their escape by playing a cruel trick on Hank, and the RV is demolished to protect Walt and Jesse.
Hank viciously assaults Jesse over the RV incident. To persuade Jesse not to press charges, Walt, now cooking in Gus's superlab, offers to make Jesse his partner. Jesse refuses. "Ever since I met you, everything I've ever cared about is gone," he says.
Jesse eventually replaces Gale, Walt's assistant, but chafes under Gus's corporate approach and starts skimming excess meth to sell to recovering addicts at his NA meetings.
Walt warns Jesse that if Gus discovers the shortages, "I won't be able to protect you." "Who's asking you to?" replies Jesse, who compounds his defiance by plotting to murder two of Gus's meth dealers. To protect Jesse, Walt kills them himself.
Walt makes peace with Gus but determines that the only way to maintain leverage is to be his sole meth cook. Gale, whom Gus reinstated at the superlab, must be eliminated.
"I can't do it, Mr. White," Jesse pleads, but when Gus's operatives hold Walt hostage, Jesse races to Gale's apartment. When Gale answers the door, Jesse pulls out his gun and, eyes tearing, pulls the trigger.