In one throwaway line, Joker comedically chides Batman ... producer Bruce Timm's odd obsession with a certain Batman romance.

So far, around 26 voice actors have lent Batman their voices ... while his comedic timing and delivery make every line he utters hilarious. Just as importantly, it never feels like Arnett is ...

Everyone is still mourning the passing of Kevin Conroy, the eternal voice of ... as Batman is in Justice League: Crisis on Infinite Earths, Part Three. And his final lines in that movie are ...