Joker: Folie à Deux

Arthur is killed by a fellow inmate who was previously obsessed with him. The inmate becomes enraged after seeing Arthur cower and beg during his trial, viewing this behavior as a betrayal of the Joker persona he admired. In a savage attack, the inmate stabs Arthur to death, symbolically showing how the monster Arthur created eventually consumed him. This violent death represents the tragic culmination of the chaos and madness Arthur embodied throughout the film.

Earlier scenes establish that other inmates view Arthur as a symbol of rebellion, making his perceived weakness during the trial shocking to his admirers.

Harleen's love is entirely fabricated. She manipulates Arthur by pretending to genuinely love him and claiming to be pregnant with his child. Her true intentions are never fully explained, but she uses Arthur's desire for connection against him. When she leaves him after his release from the car bomb chaos, Arthur's entire illusion of love and companionship shatters, revealing her manipulation as a cruel betrayal that contributes directly to his downfall.

Harleen's character is established as morally ambiguous from the start, with hints that her interest in Arthur may be more clinical than romantic.

Arthur is killed by a fellow Arkham inmate who was previously obsessed with him. This inmate had admired the Joker persona Arthur embodied but became violently disillusioned after witnessing Arthur beg and cower during his trial. The attacker stabs Arthur to death and then mutilates his own face in a Glasgow smile, echoing the Joker's iconic look and symbolically passing the Joker legend to another broken soul.

The film establishes other inmates watching Arthur closely, suggesting his status as a figure of fascination among the patient population.

After Arthur is freed in the car bomb chaos, Lee abandons him. She walks away from Arkham without looking back, leaving Arthur devastated and still believing they would escape together. The film does not reveal her ultimate fate or whether she faces any consequences for her manipulation and false pregnancy claims. Her departure represents the final crushing betrayal in Arthur's life.

After killing Arthur, the inmate carves a Glasgow smile onto his own face, replicating the iconic Joker injury. This act symbolizes that the Joker's legacy does not die with Arthur but passes to another broken, violent individual. The cycle of chaos and madness continues through this new 'Joker,' emphasizing the film's theme that the Joker represents an endless cycle of suffering and violence that transcends any single person.

Arthur's own Glasgow smile from the first film established this as a defining marker of the Joker identity.

The pregnancy was almost certainly fabricated as part of Lee's manipulation. Arthur believes Lee is genuinely pregnant with his child and that they could have a future together, but this hope is part of her false narrative to control him. When she leaves, the pregnancy is never mentioned again, confirming it was likely another lie to keep Arthur emotionally dependent.

Lee's claims about the pregnancy coincide with her efforts to convince Arthur to abandon his insanity defense, suggesting strategic manipulation.

Arthur's death symbolizes how the chaos and violence he created ultimately destroyed him. Throughout the film, Arthur struggles with his identity and the Joker persona he embraced. His death at the hands of a fellow inmate represents the destructive cycle of mental illness, societal neglect, and the chaos he embodied consuming him entirely. The monster he became destroyed the man he once was, fulfilling the film's grim worldview.

The film's opening established Arthur as someone who tried to suppress his darker impulses before fully embracing them.

During the trial, Arthur attempts to claim innocence and distance himself from the Joker persona. He begs and shows fear rather than embracing the chaos he previously represented. This behavior shocks his followers and the inmate who later kills him, who had admired the Joker as a symbol of fearless rebellion. Arthur's moment of vulnerability reveals his internal conflict between wanting to be seen as innocent and the darker Joker identity he cannot escape.

Arthur's internal struggle between Arthur Fleck and the Joker is established throughout the film as he grapples with his true identity.

Arthur Fleck physically dies, but the Joker legend does not end. The inmate who kills Arthur then adopts the Joker identity by carving a Glasgow smile onto his own face. This reveals that the Joker is not a single person but an idea, a symbol of chaos and violence that passes from one broken individual to the next. The film emphasizes that chaos is never truly silenced; it simply transforms and persists through those who are lost and manipulated.

Earlier scenes show others admiring and copying Arthur's Joker persona, establishing that the identity transcends him.

The car bomb creates chaos that allows Arthur to escape from Arkham momentarily. Arthur interprets this as a sign of a new beginning, freedom and a potential life with Lee. However, the escape proves futile since Lee abandons him and he is ultimately killed inside the asylum grounds. The car bomb represents false hope and the illusion of escape from his circumstances, underscoring the film's bleak theme that Arthur cannot outrun his destiny.

Arthur's desire for escape and a normal life with Lee is established as his primary emotional goal throughout the film.

Arthur's hope for a new life with Lee makes him vulnerable to devastating betrayal. When Lee leaves him, his emotional devastation leaves him naive and unaware of the danger around him. Walking through Arkham still longing for her return, he is killed by an inmate who sees his vulnerability as a betrayal of the Joker persona. The film suggests that Arthur's search for genuine connection in a world that only saw him as a symbol ultimately led to his destruction.

Arthur's loneliness and desperate need for love are established early in the film as his primary weakness.