Clifford Devoe

Clifford DeVoe, known as the Thinker, is a cunning criminal mastermind who wielded a specially designed 'Thinking Cap' capable of projecting mental force. A longtime foe of the original Flash, Jay Garrick, DeVoe relied on intellect and technology rather than brute strength to menace Keystone City.

Silver Age brainpower meets DC legacy in Clifford Devoe, who first stepped onto the page in The Flash #123 back in 1961 — a Gardner Fox and Carmine Infantino creation whose presence has quietly persisted across an impressive 64 years of DC history. His catalog footprint spans The Flash, the encyclopedic Who's Who: The Definitive Directory of the DC Universe, and the sweeping retrospective DC Universe: Legacies, which speaks to a character considered worthy of the broader DC canon rather than a footnote. Two of his appearances carry key-issue weight for collectors, and he keeps genuinely elite company — sharing pages with the likes of Green Lantern, Batman, Robin, and The Flash himself. Thirteen appearances may not sound like a crowd, but for a Silver Age figure still turning up in 2025, Devoe has clearly carved out a durable niche in DC's rich tapestry.