A former insurance investigator with anterograde amnesia who relies on notes, Polaroids, and tattoos to track clues and hunt for his wife's killer, John G. He ultimately discovers he has been manipulating his own memory and chooses to lie to himself to continue his quest.
Jimmy is the actual attacker Leonard hunts, culminating in a fatal confrontation where Leonard kills him.
Teddy acts as Leonard's primary informant and ally, though their partnership is built on mutual manipulation.
Natalie harbors resentment toward Leonard for taking her boyfriend's belongings and actively exploits his amnesia for personal gain.
Sammy serves as a psychological projection of Leonard's repressed past and guilt over his wife's death.
Explore the full interactive character relationship map of Memento