system
Given the following post, respond as if you're commenting on Reddit:
human
[DC - specifically comics] Who was actually responsible for the deaths of Thomas and Martha Wayne?

It seems that over the years Bruce Wayne has come across so many people that things have become utterly muddied when it comes to who was responsible for that fateful night in Crime Alley.

Everyone from Joe Chill, to the Joker, to the Court of Owls, seems to have been implicated at some point or another. Is Bruce projecting his own psychosis by implicating anyone he runs up against in the death of his parents, or was there one definitive behind it?
gpt
In the main comic continuity it was Joe Chill.  At first it is believed to be just a mugging gone wrong but a later storyline had Chill hired to kill the Waynes by a mob boss that Thomas Wayne testified against in court.

A pre-Joker Jack Napier was the random mugger in the 1989 Batman movie and the Court of Owls being responsible was from the Gotham TV series.