Oh, "Rex Libris" is a a comic book about a librarian, this sounds interesting. Oh, he's a time-traveling librarian. Oh dear. He's a time-traveling librarian who can withstand a vacuum and has superpowers and... yawn. Whatever.
I think I'll go re-read Jason Shiga's Bookhunter. Now there's a good comic about fanciful high-adventure library hijinx.