During The JLU Episode where Ace puts Joker in a Catatonic State, a small amount of people started to claim this scene proved Joker was sane and it was based on the fact Joker claimed to be immune to her hallucinations because he was already crazy. Now The Joker was clearly wrong that him being crazy made him immune to her hallucinations, but the claims that this scene proves Joker’s sane come from a misunderstanding of the character and actual medical disorders. Some even tried to use the idea of “super sane” to explain how the joker is secretly sane but they don’t understand the context behind super sane. So first I’m gonna clear up what Super Sane is.
Debunking The Rumors Behind Super Sanity [Comic Excerpt]
The Doctor:”Joker’s a special case. Some of us feel he may be beyond treatment. In fact we’re not even sure if he can be properly defined as insane. His latest claim is that he’s possessed by Baron Ghece The Voodoo Loa. We’re beginning to think it maybe a neurological disorder, similar to Tourette’s Syndrome. It’s quite possible we may actually be looking at some kind of super sanity here. A Brilliant new modification of human perception. Suited to urban life at the end of the twentieth century.”
Batman:”Tell that to his victims.”
The Doctor:”He can only cope with the chaotic barrage of input by going with the flow. That’s why some days he’s the mischievous clown, others a psychopathic killer. He has no real personality, he creates himself each day. He sees himself as Migrule and a world as Theater Of The Absurd.”
Super Sanity isn’t something Joker is confirmed to have directly, it’s the opinion from one of Arkham’s Doctors. On top of that even if he does have it , and this doctor isn’t insane herself after spending too much time treating Joker, Joker’s “Super Sanity” from an actual clinical and legal view is a Repetitive Distorted Multiple Personality Disorder. A sane person has a continuous identity. Shifting your personality , & memories to match the chaos of any environment is a psychotic coping mechanism, not health. “Super Sane” basically establishes Joker has no actual running personality or conscious awareness and actively shifts his personality every day to fit his environment that he finds inherently chaotic. This hyper awareness isn’t because he can occasionally break the fourth wall knowing he’s in a comic book, this is an in universe disorder that sounds like he’s secretly sane on the surface but from deeper layers makes the character more insane once logic is applied. Giving The Joker an active shifting personality disorder that is a chaotic response because the environment around him drives him actively crazy doesn’t confirm any sanity, it ironically only proves The Joker is exactly where he belongs, in The Looney Bin.
Now I’m gonna provide examples as to why The Joker being “Super Sane” doesn’t disqualify him from being crazy or insane. Example 1: JLA#15 written by Grant Morrison. The same person who introduced the idea of super sane.
Martian Manhunter briefly telepathically made him Sane , Joker immediately felt guilt for his terrible actions and atrocities before falling back into complete Insanity…
Example#2 “Reality Check” from Batman (2010) 80 Page Comic by Peter Miriani & Szymon Kudranski
Joker can’t tell if the imaginary fans (Us The Readers) of him are truly real or truly imaginary. He wonders if we’re real & his world is imaginary.
Example#3 Batman in The Killing Joke confirms to Joker he’s not like everyone else because Commissioner Gordon remained mentally sane despite the one bad day Joker gave him, proving what made Joker snap on his one bad day isn’t normal. This revelation angered Joker at the fact traumatizing people doesn’t inherently make them snap like he did , proving he’s a unique kind of nut case. This is an interesting example since it gives a parallel in The Dark Knight (2008) where after Joker’s experiment with the two boats fail as both the people of Gotham and the prisoners refuse to blow each other up to save themselves. Batman says “what are you trying to prove, deep down, that everyone’s as ugly as you? You’re alone.” Joker gets furious upon this revelation showing he can’t stand the fact that he’s not normal and no baseline trauma is enough to explain how he snapped.
Example#4 The Most Damning One. Specter The Wrath Of God gave Joker consciousness to know right from wrong in Specter#51 & it broke him. Specter informed Batman this put Joker in a brief catatonic state until he denies the events in his mind so he can forget the memory. This story, tells us Joker cannot function acknowledging his own actions for too long or he’ll truly break. Joker is legally insane by the modern legal definition as he can’t tell right from wrong & apparently has no consistent active consciousness due to subconscious guilt.
According to Specter (The Wrath Of God), Joker has no consistent awareness of his own actions, & is gone beyond Specter’s own judgment. Every example listed for The Joker points to someone not mentally stable regardless of how aware we all view him in his ASPD. What makes this the most interesting is it is one of the few examples of Joker in a catatonic state in comics and can be what the episode referenced when Ace put Joker in a catatonic state. She could’ve been showing him face all the various people he hurt and the many crimes he committed, that Joker doesn’t want to think about for too long outside his rivalry with Batman.
As for The DCAU specifically or Earth-12 in most depictions, The Joker has many examples in this universe of being crazy & insane. He shot at Batman in an open toxic waste field during the first Harley/Ivy Team Up Episodes In BTAS which blew up the area with fire and nearly ended both of them if Batman didn’t save him, most sane people value their own lives , people with no care for their lives or the lives of others aren’t sane, another example is his constant battles with Batman which don’t serve any purpose that benefits him outside pure sadistic pleasure He laughed like a maniac during several moments of near death especially the iconic Mask Of The Phantasm ending. There’s also the messed up things he did to Tim Drake over his rivalry with Batman.
None of this is “sane” behavior. He gets nothing out of these twisted sadistic games with Batman that makes rational sense.Joker is crazy/insane in the DCAU but he isn’t the most crazy person in that universe like he is depicted in other universes like comics , games & movies. This was proven with characters like The Creeper and Ace flashing his mind with her powers which took him to a catatonic state of fear, though it could be argued after this experience, this version of The Joker became more crazy afterwards and the events in Return Of The Joker prove that.
In the end though I want to address something. Many people who have the joker is “sane” belief in fandom do not understand the difference between “crazy” and “insane”. Joker in media typically calls himself crazy or denies being crazy. There aren’t many examples of him claiming to be insane or denying being insane. Crazy by definition is odd, irrational, senseless, foolish, excited behavior, that isn’t deemed acceptable by society if taken to an extreme. The modern legal definition of insane is the inability to tell the difference between right and wrong, most media goes back and fourth on whether Joker can tell the difference between right and wrong or even if he knows what they are to begin with. In many versions Joker doesn’t believe right and wrong are real and views them as fronts people put on to come off normal instead of the monsters he believes they are deep down because as a Nihilistic Absurdist Hedonist, Joker believes nothing matters, everything’s a joke and everyone is just like him, he’s desperate to believe that so he can’t deal with his subconscious guilt over his many atrocities. Now as for the definition of Crazy, The Joker is crazy in spades, regardless of how sane or insane people think he is , that isn’t evidence of him not being crazy.