If you enjoyed Grant Morrison's appearance in the video for My Chemical Romance's "Na Na Na", you'll be happy to know he's back for the follow-up, "Sing." The Batman Inc. writer has also revealed a little more about the character he plays in both videos to the L.A. Times.

"Korse is an exterminator for the S/C/A/R/E/C/R/O/W unit of Better Living Industries," Morrison told Geoff Boucher of the Hero Complex blog. "His extensive back story has yet to be revealed but he’s intimately connected with the Killjoys and their secret history. He’s a remorseless human bloodhound, a hunter who dresses like an undead, post-apocalyptic Doc Holliday."