Ivan Cohen is the author of Batman Returns: One Dark Christmas Eve, as well as comic books, graphic novels, books, and even ice-cream packages starring characters everyone knows. A lifelong New Yorker, he graduated from NY's math-and-science focused Stuyvesant High School, where he met many, many real-life Sheldons. Jen Taylor is an illustrator and designer who loves all things nerdy and LOVES The Big Bang Theory! She's illustrated a bunch of books, including The Golden Girls: Goodnight Girls; Only in California; and Flash, the Little Fire Engine. When she's not drawing, she can be found traveling around the country with her husband and two corgis in their tiny house and attending comic cons along the way! You can visit Jen at www.jentaylor.net.