Damian Wayne / Robin
The son of Bruce Wayne and Talia al Ghul is the current Robin. He runs with a temper and an aggressive streak like Jason Todd used to but with a skill that out reaches a lot of what the other Robins were capable of at his age or even now. Hes brash, cocky and frankly quite dark in his actions and Id imagine like Damian (who its taken me years to warm to really) would think he could take on the Joker with ease. Theres quite a bit of room to grow the drama between this latest Robin and Batman's nemeis and a real chance to create something new within the Bat-mythology.
Chances Of Getting Killed: It seems like DC have been developing Damian for a fair while. Hes overcome quite a bit in the last year with his stressed relationship with his father, faced some of his own demons, overcome some issues and had quite a lot of interaction with the other Robins. Damians cockiness has become quite enjoyable when handled well and seeing him killed off seems unlikely as losing this character at this stage in his development could feel like a bit of waste. Plus hes the key to the drama when it comes to re-introducing Ra's al Ghul into the DC 52 at a later date, right?
Shock Value: Joker killing another Robin and this time Bruces son as well would be a massive shock to the system and as mentioned before it could lead on to his attempted resurrection via Ra's al Ghul if Batman found the demon to help the boy. This could be quite the notch in Joker's belt and lead on to a revenge story from little Damian Wayne down the line. Killing Damian Wayne would be a massive deal in the world of Batman and a huge shock if it happens.
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