In DCAU (DC Animated Universe), Dick Grayson was much taller and older when he left Batman and Tim Drake went crazy when The Joker kidnapped him, so is the Teen Titans Robin the third Robin?
He is Dick Grayson. In one of the episodes, I clearly remember seeing a future version of Robin becoming Nightwing, which was Dick Grayson's superhero alterego.
This is confirmed by the Teen Titans Wikia article on Robin.
Teen Titans is not part of the DCAU. While it shares the common elements that all DC continuities have, Teen Titans (and TTG!) never had a single cross over in series, nor word of god. There was some talk about crossing over, but it was never done due to animation and theme differences.
As such, the Teen Titans Robin's history is completely separate from Batman the Animated Series, The Adventures of Batman & Robin and Batman Beyond. So if TT Robin is Dick, the age he left Batman in BTAS doesn't matter, nor would Drake's insanity.
That said, the TV series never explicitly stated which Robin, if any of the pre-existing, TT Robin was. Nor has word of god. The Teen Titans Go! comic is of questionable continuity. It tries not to contradict the show, but it has never been said to be true canon. Teen Titans Go! cartoon is not continuity with the Teen Titans cartoon. So that can't be used as evidence either.
But the biggest point is that it's HEAVILY IMPLIED that TT Robin is Dick Grayson, based on multiple points of previous continuity. Larry, the Bat-Mite/Mxyzptlk expy, is called Nosyarg Kicd (Dick Grayson backwards). Robin becoming Nightwing. The nightmare/dream sequences.
It's Dick Grayson, if you watch the original TV serial, the episode when Robin breaks his arm and the interdimensional creature that is a fan of Robin helps you find out the creature is named Nosyarg Kcid (Larry) which is Dick Grayson backwards.
It is hard to say with any certainty. I am more familiar with Teen Titans Go!, but there seems to be some continuity between that and the Teen Titans series, so I will answer to the best of my ability.
In one flash-forward in TTG, we see him as Nightwing, which suggests that he is Dick Grayson. However, in the episode where he is asked to guard the Batcave, we see an urn on a shelf in the cave; the urn is labeled "Robin II", and next to it is a crowbar. This is obviously a reference to Jason Todd, the second Robin, who was beaten half to death by the Joker with a crowbar, then killed by a bomb set by the Joker.
If this has already happened, then the Robin who leads the Teen Titans has to be Tim Drake or a subsequent Robin, not Dick Grayson. However, in another episode, we see the Teen Titans Robin alongside Dick Grayson Robin, Tim Drake Robin, and Carrie Kelley Robin. Obviously there can't be two Dick Grayson Robins, so the Teen Titans Robin is probably someone else, possibly Damien Wayne
(Note: I stopped reading Batman comics about 23 years ago, so I am not up to date on who has been Robin since then - when I stopped following the comics, Tim Drake had just assumed the title of Robin. I don't know who Damien Wayne or Carrie Kelley are, really.)
It is Dick Grayson. At the end of the episode "Haunted" you will see that when Raven gets inside Robin's head there is a circus. If you read the Batman comic books the real story of Robin was when he was a circus boy his parents were performing at the circus and the wire snapped then they fell to their deaths.
Also it must be Dick Grayson because Robin becomes Nightwing. Jason Todd, Tim Drake, and Damian Wayne do not. The episode "How Long is Forever" in fact includes Nightwing.
If you were talking about the 2003 Teen Titans, then it is Dick Grayson. The reason why because in various episodes of the Teen Titans, we see that it doesn't mention anywhere in the show that Robin is Tim Drake or Jason Todd ( for example ), but if you mean the newer versions, then the answer to that is Damian Wayne.
actually the events of batman beyond return of the joker are incorrect. the experiments performed on drake were actually performed on jason todd( robin two) which actually killed him. (wikipedia evidence and original comic series). he comes back to life due to an interdimenianal inncident. todd then becomes the red hood(on earth 52 he's red robbin). at this point greyson has become nightwing and drake has become the new leader of the teen titans. wiki explains that todd even visited drake at titans tower and fought him(its believed in the teen tiitans episode x that todd is in fact the one who stole the red x suit). thats what i think.
And now I'm going to explain about his costume
Tim Drake's First Robin Costume
Tim's early costume was designed with functionality in mind; more so than Dick's and Jason's. Instead of a tunic, Tim wore a red bulletproof singlet with green short-sleeves, yellow straps and the 'R' symbol, which could double as an emergency shuriken, emblazoned on his chest. He wore green leggings, presumably made of Nomex, and green gloves. The pixie boots that Dick and Jason once wore were replaced by much more practical footwear: Jika-Tabi style boots, which allow Tim a greater degree of stealth and agility. The outfit was made complete by a black and yellow cape, noticeably longer than the other Robin's, which Tim often shrouded himself in just like his mentor and a green mask that covered his eye area and provided lensing. He carried his gear in a light, golden-yellow utility belt; most devices were stored in small container-like devices that adorned the belt. He carried his retractable bo as his primary weapon, which attached to the back of the belt
Tim Drake's Second Robin Suit
After the death of Conner Kent in Infinite Crisis, Tim, deeply affected by the loss of his best friend, redesigned his costume to more closely resemble the red and black color scheme of the late Superboy. This was done by eliminating the green elements from the costume entirely; Tim wore an all red Nomex bodysuit with three yellow straps across the chest, and black trunks, gloves and lightweight boots. The 'R' symbol remained on the upper left of the chest. The black and yellow cape, the top of which acted as a collar surrounding and protecting his neck, remained. He replaced the green mask with a black one of similar shape and began wearing a yellow, heavily-pouched, military style utility belt to carry his paraphernalia and bo.
Alright now this evidence should take the cake it should prove that the Robin in Teen Titans animated series is Tim Drake. I'm gonna explain about the weapons Tim uses ok
Weaponry and Gadgets
Tim carries a gear load out similar to that of Batman and Nightwing.
- Bo: a custom-made, retractable bo staff that serves as Tim's primary weapon. The bo has small holes drilled in either end to create a whistling effect when wielded, which disorients opponents and keeps them off guard. It can deploy a basic shield at the touch of a button, and contains a retractable blade at the top, effectively making it a spear when needed.
- Batarang, throwing discs and 'R'-shurikens: offensive weapons that can be thrown as projectiles or boomerangs.
- Bolas: cords with weighted ends designed to ensnare opponents when throwing in a gyrating motion. These bolas can emit an electric shock if needed.
Now why would they make the Robin from Teen Titans like Tim Drake but just with Dick Grayson's past it doesn't any make sense I mean cmon he has a retractable bo like Tim Drake he has a light-weighted golden utility belt and he throws shurikens and discs too and the outfit he wears looks more modern than Dick Grayson's classic costume from Batman the animated series and the only thing what messed it up was they made him have Dick Graysons memories and that the characters in this cartoon has no secret identity so theres no telling which it Robin he could be. Tell me this before those episode came out you know when it was hinting that the Robin in the show was Dick Grayson before it came out did everybody think he was Tim Drake did anybody thought he was Tim Drake Robin from The New Batman Adventures but just a older and mature teen who take things more seriously like he doesn't underestimate his opponent oh yeah and Tim Drake also led the Teen Titans too if nobody didn't knew that he led the Titans too in the comics. The Teen Titans was also mention in Static Shock cartoon when Batman made a cameo and the way Batman looks in there he looks like from The New Batman Adventures
The Robin from Teen Titans animated series is actually Tim Drake heres proof. As Robin, the Teen Wonder Tim was an excellent detective, however he was missing an important skill: martial arts. Right after Batman gave Tim the Robin mantle, he sent him to Paris to learn fighting skills from a master martial artist, Rahul Lama. He would learn healing techniques from the old master while learning martial arts from his grandson. Tim noticed an organized crime group lead by King Snake, so he decided to try and stop them. However, Lady Shiva had been pursuing King Snake also, and she discovers the potential that Tim had in martial arts. Lady Shiva takes Tim in and decides to train him herself. She also offered to teach him how to use only one weapon of his choice. Tim chose the bo staff because it was the least deadliest weapon. Nearing the end of his training, Lady Shiva and Tim had a sparring match in which Tim defeats her with the bo staff. Shiva then presents Tim with a gift. It is a retractable bo staff that he could conceal. King Snake planned to release a plague, but he was stopped by Tim and Lady Shiva. While King Snake was hanging onto the building helplessly, Shiva orders Tim to kill him in order to "graduate". Despite Shiva's order, Tim refused to kill King Snake.
you can read more at this site here comicvine.com/tim-drake/4005-9290/