Many people think that Harley is a victim of Stockholm Syndrome but since the bond and attraction was already there beforehand, Stockholm's doesn't make sense. Since The Joker never kidnapped her or held her as a hostage, Harley never experienced a true Stockholm episode.
Harley Quinn is an unhealthy ENFP personality type. She has a strong need to connect emotionally with others. As an ENFP, Harley is a unique mixture of being people-oriented but also introspective.
The Joker is clearly a psychopath. He has no conscience. He has no empathy for anybody.
With her Betty Boop accent, wacky wardrobe and gymnastic facility with a bat, Harley is one lovable psychopath.
Dominant Introverted iNtuition [Ni] Harley is extremely analytic and can shift her perspective when needed to justify practically any action she takes and the actions of others, particularly the Joker.
In the story, the Joker takes Harleen Quinzel to the chemical plant where he originated and pushes her into a vat of chemicals against her will, which bleaches her skin and drives her insane, resulting in her transformation to Harley Quinn, similar to the Joker's transformation in his origins.
Riddler. Edward Nigma has a form of obsessive compulsive disorder (OCD). However much this narcissist sometimes wants to pull a caper without sending a riddle, he cannot. His occasional attempts to fight the compulsion show he knows it can be maladaptive.
Depressive Disorder. Peter has experienced no Manic or Hypomanic Episodes, in turn, the diagnosis is Major Depressive Disorder and not a Bipolar Disorder. The current episode is the first that he has experienced, so the course is specified as Single Episode.
She loves understanding how people think, but more she is interested in the feelings and emotions of others. She is incredibly empathetic to all the strays she meets and combined with that dominant Ni she often sees and understands too much of their emotions and motivations.
'She's codependent with the Joker' "Harley's story is about her relationships - not just with [Joker], but finding herself and her independence,” Robbie told Total Film. She's codependent with the Joker, and when you see that, you start seeing it as a mental illness.”
“Immortal Children” (a.k.a. Baby Vampires) These are small children who have been turned into full vampires, meaning they will stay 5 years old (or 4 or 8, you pick) for the rest of their lives. Obviously, this means they are super-cute baby vampires, and as such, they can control people with a single look.
The chain connected to the harpoon was caught by the wheels of the Gigahorse and pulled the harpoon with tremendous force, ripping Immortan Joe's jaw, throat and nose off, killing him in an instant. His body was covered in sheets and delivered atop the Gigahorse back to The Citadel.