As has been discussed briefly before, Jason Todd first appeared in 1984 as another circus kid, but in June 1987 that got wiped away completely in the pages of Batman #408.
Unfortunately, I used up a few pages from Batman #408 in this post
about how Dick gave up being Robin in this iteration.So to balance that out, I'm also going to look at #409 and #410, which expand on Jason 2.0's introduction and training, and also looks to maybe highlight how the kid got a bum rap, especially after he died.
( Did Robin Die Tonight? )