Dark Horse Comics has a short comic on their Dark Horse Presents myspace page that introduces us to Captain Hammer, Dr. Horrible’s arch nemesis. This is all a tie in to the new Joss Whedon web series Doctor Horrible’s Sing-Along Blog starring Neil Patrick Harris as Dr. Horrible and Nathan Fillion as Captain Hammer.

They released a little teaser too (via):

Teaser from Dr. Horrible's Sing-Along Blog on Vimeo.