In Batman #408 (by Max Allan Collins, Chris Warner and Mike DeCarlo), Batman and Robin are fighting the Joker when Robin is shot... Batman is so distraught that he fires Dick as Robin, telling him that he can no longer risk Dick's life as Robin...
In the case of Dick and the New Teen Titans there are multiple reasons, one being that Raven manipulated the team together. On a more personal note, Dick was not on good terms with Bruce. He felt Bruce was disappointing in him from dropping out of college while also feeling rudderless in his own life.
“I think that deep down, there is a pain and a confusion to Dick,” Thwaites explained. “We start the series from a point where Dick Grayson is broken. He's unhappy and he's suffering.” That suffering leads Dick to walk away from superheroes and become a cop in Detroit.
What was the falling out between Batman and Robin?
When Robin was 17, he was shot in the shoulder by the Joker, and this scared Batman into ending his career for good. Dick realized at that point he had grown up: He no longer relied on Batman and, in fact, he and the Dark Knight disagreed on crime-fighting methodology as Batman used torture and Dick didn't like it.
For Dick Grayson it was because he didn't want to be in Batman's shadow anymore. For Jason Todd after he was revived he didn't go back to Batman because he wanted to get revenge.
Dick Grayson/Robin in the Teen Titans takes a distinctly darker approach to the character than the comics do as a rule. There, Grayson remains an ally of Batman. But, in the Teen Titans series, he deeply resents Batman for taking him in as a child and teaching him how to become a violent vigilante just like him.
Joker also brings up the fact he knows there has been more than one Robin. The one he hates most isn't Jason Todd, the Robin he murdered in cold blood; it's actually Tim Drake. Joker admits that he actually rather liked Jason.
In Dark Knight Strikes Again, Frank Miller reimagines Dick Grayson as a Robin whose bitterness towards Batman turns him into a new terrifying Joker. In Frank Miller's The Dark Knight Strikes Again, the original Robin became a dark new Joker.
Dick Grayson became Nightwing after Batman fired him from his own mantle of Robin for getting shot by Joker. Grayson's Flamebird was Bette Kane. After The New Teen Titans, Nightwing teamed up with old friend Speedy in Action Comics #613-618 & #627-634 later collected in New Friends Old Enemies.
He operated solo and as part of the Dynamic Duo. Robin also led teams like Young Justice and the Teen Titans. When Bruce Wayne appeared to die during the Final Crisis event, everything changed. Dick Grayson took up the mantle of Batman and asked Damian Wayne to be his Robin instead of Tim Drake.
In the pre-Crisis on Infinite Earths continuity, the maturing Dick Grayson grows weary of his role as Batman's young sidekick. He renames himself Nightwing, recalling his adventure in the Kryptonian city of Kandor, where he and Batman meet the local hero of the same name.
Dick Grayson doesn't want to be like Batman because he knows how Bruce Wayne's obsessive drive for justice can be dertimental to have a social life. When Dick Grayson took up the mantle of Batman, were villains able to tell he was not the same Batman they knew?
The Tamaranian princess and Batman's former sidekick saw their relationship go through a lot of extremes, but any chance of happiness together was never truly on the cards, as their personal lives saw them grow apart and eventually end up as only friends.
Dick Grayson is the adopted son of Bruce Wayne, better known as the vigilante Batman. Trained by the Dark Knight himself, Grayson eventually became Batman's sidekick, the first Robin.
Warning! Contains Spoilers For Lazarus Planet: Omega! Batman has trained many young heroes as Robin, and while they have all been impressive on their own, DC just confirmed that one stands above the others in terms of power: Damian Wayne is the most powerful Robin.
With false implanted memories in his head, Dick Grayson becomes the Son of Joker, and it looks as though he just got a pretty gross inheritance in Red Hood and the Outlaws #48.
Joker Killed Jason Todd to Destroy His Own Conscience, DC Implies - IMDb. Jason Todd's brutal murder at the hands of The Joker is one of the darkest moments in Batman's mythos, but The Clown Prince of Crime may have killed the second Robin to destroy what is left of his conscience.
Jarro grew attached to Batman and even often calls him “father”. He wanted to prove to Batman that he can be the best Robin and even convinced Batman to give him a chance. Jarro became the new Robin and was even said to be Batman's favorite Robin, admitted by Batman himself.
If Grayson is the humanization of Batman, and Drake is the idealization of Batman, then Jason represents the perversion of Batman. He took Batman's ideals to the darkest extremes, and managed to make things both better (by putting fear of death into criminals) and worse (by attracting even worse villains into Gotham).
Mistreatment, physical abuse, manipulation, lying, failure to protect him, are just a few examples. Here are the worst things Batman has done to Robin.
Seeing as how Jason is a hero again, that meant that Batman could have always tried to find and help his former Robin. Yet, he never did, and Jason was forced to find his own path back. So, why then? This was the question driving Jason's assault.
Physical Strength: Batman is typically depicted as having superior physical strength and combat skills compared to Robin. Batman's intense training, martial arts expertise, and access to advanced technology make him a formidable opponent.
While Robin fears the three admirals for their reputation of being the most powerful fighters of the Marines, she fears Aokiji the most, for they had a personal encounter 20 years ago. Aokiji stated that he was not her friend, and he would hunt her down if she became a problem.
