By the time of The Dark Knight, he has made peace with his new mental state. Scarecrow isn't terrified of Batman anymore. He is just afraid enough to know that when Batman shows up, the only sane choice is to flee.
Following the 1986 multi-title event Crisis on Infinite Earths reboot, the character's origin story is expanded on in Batman Annual #19 and the miniseries Batman/Scarecrow: Year One, with this narrative also revealing that Crane has a fear of bats.
This fear was intended for the one who was willing to disrupt his plans: Batman. The Dark Knight is what the Scarecrow fears the most and curiously the one who was closest to becoming a reality.
His face has an even more a skeletal like structure, with some of his face peeling or falling off, and (as evident in the Arkham Knight Toy), his left leg also needs braces. So clearly he was heavily injured in that fight, and no doubt that he blames batman for it, fueling his hate for him.
Ironically, Batman is afraid of the very creatures he uses as part of his aesthetic. As a child, Bruce's fear of bats stemmed from falling in a cave where he encountered the animal. He continued to harbor it as an adult, although Bruce used the very fear as his strength.
That would explain why Thomas Elliot doesn't fear Batman. He knows who is behind the mask and Hush resents him for gaining the wealth and independence he craved as a child. As a skilled tactician, Thomas learned from a young age to think like his opponents and use them to his advantage.
To Be Forgotten. While fans got to hear many memorable quotes from Joker in Batman: Arkham, the series also revealed what his greatest fear is supposed to be. As it turned out, The Joker feared being forgotten more than anything else because it meant nobody was afraid of him anymore, rendering all his crimes void.
The Scarecrow's greatest fear in Batman Begins was Ra's al Ghul. Throughout Batman Begins Crane refers to the man he works for as a cudgel against Carmine Falcone. When the freshly-gassed Crane sees Batman as the coal-faced demon, he says, "Ra's al Ghul." Sure, he might be just answering Batman's question.
His background is similar to his comic book counterpart; he is portrayed as a psychiatrist who is obsessed with fear, and who was fired from his teaching job for experimenting on his students. He sought revenge on the superiors who fired him, using his Fear Toxin.
Scarecrow, aka Jonathan Crane, is a terrifying villain in the Batman: Arkham series, most notably in Batman: Arkham Knight, which cements him as the series' best villain over the Joker. The strength, resilience, and success that Scarecrow has over the course of the games make him the best villain in the series.
Jonathan Crane, also known as the Scarecrow, is a Gotham City supervillain and a major enemy of Batman. Created by Batman creators Bill Finger and Bob Kane, he first appeared in World's Finest Comics #3 (Fall 1941).
For much of the Scarecrow's comic book past, he was simply a psychiatrist obsessed with the concept of fear as the result of being bullied in childhood — not only by classmates in school, but, in some versions of his origin story (most notably in Batman: The Long Halloween, which has been an inspiration for Gotham more ...
Even though Killer Croc was the one who mutilated him, Scarecrow solely blames Batman for his near-death experience and never takes into consideration that he willingly yet ignorantly went into Croc's lair in the first place, thus making him a deluded hypocrite. He's also more than deserved it for all his actions.
So what is it that makes the criminals fearful upon seeing him in the night? Besides his mental and physical capabilities, Batman's visible threat is conveyed through his choice of mask and costume. It is what brings about a cascade of fear within the hearts of evildoers.
His plan succeeded, but Batman's will was stronger than the toxin's effects, which were nullified. Using a previous idea, Scarecrow developed a fear pheromone, which once injected into the body, would cause every person nearby to fear that person infected.
Scarecrow & The Joker are the only villains in The Dark Knight Trilogy to be Pure Evil. Furthermore, they are the only major villains in The Dark Knight Trilogy who didn't die and were sent to Arkham Asylum at least once.
Crane is usually portrayed as a middle-aged guy on his 40s/50s, but his physical appearance in general is rather inconsistent, greatly varying depending on the artist.
Aquaman outclasses Scarecrow in every facet of the fight. He's dramatically more physically capable, and his willpower as a seasoned Atlantean warrior makes the efficiency of the gas a tall order. However, what seals Scarecrow's fate is Arthur's own ability to influence the minds of his opponent.
But the thing about Scarecrow is that he lives for scaring others. His greatest pleasure in life is making other people's worst nightmares become a reality. It stands to reason that this overly complicated effort is no different. Scarecrow wants to make Batman's greatest fear come to life.
In Batman's origin story, Joe Chill is the mugger who murders young Bruce Wayne's parents, Dr. Thomas Wayne and Martha Wayne. The murder traumatizes Bruce, inspiring his vow to avenge their deaths by fighting crime in Gotham City as the vigilante Batman.
In the documentary I Am Heath Ledger (via Digital Spy) it's revealed that, in order to keep the prosthetics in their place as they got loose when he spoke, Ledger had to lick his makeup to keep it in place, and it ended up becoming part of the Joker's manic personality, as well as his most memorable mannerism.
