When was the first time Batman meet Joker?

April 1940
The Joker debuted in Batman #1 (April 1940) as the eponymous character’s first villain, about a year after Batman’s debut in Detective Comics #27 (May 1939).

How old was Batman when he first met Joker?

In the 1989 movie, he was about 14 years older. In the animated series canon, Joker was about 44 at the start of the show, while Batman was around 31 (given that the timeline established in Batman: Mask of the Phantasm places Jokers birth around 1948 and Batman’s was around 1961).

How did Batman know Joker was coming?

Batman is running software in the batbunker to identify Joker’s face (we can see this in a couple scenes, specially after one of the Batman copycats gets killed by the Joker and the video is sent to the TV).

Are Batman and Joker brothers in the comics?

The Wayne family is established early on in the story, with Arthur’s mother, Penny (Frances Conroy), writing to businessman-turned-politico Thomas Wayne (Brett Cullen) asking for financial assistance. That’s right: Batman and Joker are half-brothers, at least according to Penny.

Does Joker know Batman is Bruce Wayne in The Dark Knight?

As correctly put by Nikilav Venkatesh, Joker never knew Batman’s identity. And it really didn’t mattered. Remember when Joker explains why the city needs a class of criminal. Criminals were scared of a mask and not of the face behind that mask.

Why did Batman go after Dent?

Batman believed what the Joker said to be true and in his panic and not having dealt with someone like Joker before, he was deceived. Joker gave him the wrong address. He changed them and that’s why batman reached to dent’s place.

Why is Joker’s face messed up?

He was later disfigured and brain-damaged after a fall into a vat of chemicals. This most facially scarred version of the Joker was left with nothing but to wait for the day Bruce Wayne fully assumed the alter-ego of Batman.