User blog comment:Marcymariehunter/Joker/@comment-730941-20101104021138/@comment-217683-20101224002823

He wasn't saying Joker can't be serious, just that, thus far, the developers have chosen for him to not be seen as a serious character. As Bronzey pretty clearly states, Joker's role in the series thus far has been that of a comic sidekick, sort of a little "peanut gallery", quipping about anything and everything, not really engaging in serious behavior except in a few very rare instances which represent a clear minority of Joker's appearances. The comment wasn't about the character himself, rather about the characterization of Joker by the writers. No need to go criticizing others with snarky comments such as "I am sorry, but did you really play ME?" No need whatsoever.