For those that are all psyched that we are getting a look at the one who would become The Joker, let us all remember some things:
1. It is at least 10 years before the Batman arrives in the city.
2. Presuming they stay with history regarding the Joker, he will end up getting an acid bath at Axis Chemicals and end up going insane and becoming the Joker.
3. There are multiple continuities about the original Red Hood. Either it was the man who would be the Joker forced to wear the Red Hood by the Red Hood gang and he gets the chemical bath, or he was already a criminal using the Red Hood identity until he got dunked in the chemicals and becomes the Joker. Now after teh 2011 reboot of DC, there was a Red Hood Gang that began to form after the death of Thomas and Martha Wayne and again the Joker does NOT arise until after Batman arrives in the city.
Judging by the pictures that have been released at the above posted link, the unmasked Red Hood that is in the street is likely part of the Red Hood Gang, and is clearly NOT the kid that tormented Bruce, which forced Alfred and BRuce to confront him later at the kid's home. This is the same kid that doesn't appear to be much older then Bruce himself, so the odds of him being the Red Hood are about slim to none. The kid might be in the gang, but the kid becoming the leader and then the Joker? Don't make me laugh.
Also it appears in one of the released photos that useless Barbara shows up. Too bad, she was better off gone.
Also I would remind all and sundry that IF the Joker showed up now in this pre Batman era, that many fans wouldn't accept it very well, the show may well jump the shark, and the Joker would make mince meat out of the police. They are not equipped for someone like him.
So unless the series fast forwards a few years with Season 2 and Bruce returns as Batman, we are NOT getting the Joker.
The kid though in the teaser did appear to me to be the same one that was mocking Bruce, and that he laid a beat down on at his own house, so that would mean the first intial encounter with Bats and the J man were when they were both teenagers?
And this cements to me that best to view Gothan as Smallsville, as in they are not bonded to what has been established in either comics or the movies, and this is like a seperate earth and batman all together.....
And that is still why do see Gordon donning the bat suit sometime in the series, and handing that off to bruce right at the very end of show!
And if this Joker is indeed same kid that was bother bruce, would mean that they reallu do go way baCK!