I'm pleased that schema.org now (as of today's 2.1 "ganymede" release) has decent support for describing comics through the bibliographic extension, with the addition of such types and properties as:
It has been a long time coming. put together the first proposal ages ago in January, 2012, with Henry Andrews of comics.org and rapidly joining in the conversation.
I picked it up in late 2013 primarily to work on the Periodicals side of things, but also wanted to carry through the Comics effort. Periodicals went into core schema.org with a little bit of pain, but it's taken until now to get Comics into the shiny new bib extension. Thankfully of the Comic Book Ontology gave it a positive review and helpful suggestions in April (https://lists.w3.org/Archives/Public/public-schemabibex/2015Apr/0020.html) to polish the vocabulary.
Many thanks to and for their work in finishing off the extension infrastructure and making this possible. I'm looking forward to a world of structured comic data!