Comments: McFarlane Toys' second Monsters series is based on the L. Frank Baum novel The Wonderful Wizard of Oz. The classic characters in the book receive a bit of a "twist" in this series, an artistic interpretation of what could have been in an alternate Wizard of Oz universe.He may not have a heart yet, but this biomechanical Tin Woodman has an ax and a robotic arm appendage that more than make up for it.