The Golden Age Flash finally gets a slightly memorable villain in the form of The Thinker in All-Flash Comics #12 (September 1943). The Thinker is Clifford DeVoe, an attorney whose career is ended by a criminal and decides to work on the other side of the law, out-thinking everyone with his tremendous brainpower. This version of the Thinker was featured in 2018 as Flash Season 4’s “big bad”.