Jim Ottaviani and Sean Bieri have released the settings and characters of their Better Zombies Through Physics comics under the Creative Commons license.
BZTP is an amusing web comic released through Tor.com for Halloween. It features a company using the Schrodinger’s Cat problem to create animals that are neither alive nor dead – zombie kitties for Halloween! The material has been released under an Attribution/Share Alike license, except for the QTI logo. If you find yourself inspired to use it, be sure to send it to Tor Comics to see if they want to post it on Tor.com.