Ah, I forgot to comment on this! So sorry I didn't before.
It really is a great drawing, and I know I came across it before at some point. Took me forever to find you, your works, and this drawing. I saw most of your gallery (I actually found you the first time through your "Jealousy" comics you did. They're pretty awesome). I really love your styles for both Joker and Harley! ^_^
I really do love this piece though. This Joker (from that DKR part 2) is such a scary one! o_o