The Last Ronin #1 Cyn City is a modern age US comic book published by IDW Publishing. It features characters such as Turtle, Raphael, and Michelangelo. The cover artist and writer, Ben Bishop, has signed and remarked the comic, which has been graded 9.8 Near Mint/Mint by Certified Guaranty Company (CGC). The autograph authentication is also provided by CGC. The comic is the first issue of the Ronin series.