At some point in his career, Edward Nigma (also known as the Riddler) was diagnosed with terminal cancer, eventually hijacked one of Ra's al Ghul's Lazarus Pits to regain his health. During this mystical treatment, which renders the participant temporarily insane, the highly intelligent Nigma experienced an unexpected epiphany, realizing that Bruce Wayne is Batman. Soon afterwards the Riddler attempted to sell Elliot the secrets of the Lazarus Pit in exchange for a large cash sum. Elliot, by this time having discovered Nigma's criminal background, instead offered to pay the Riddler to kill his childhood enemy Bruce Wayne. Realizing that they shared a common hatred for Wayne, Elliot and the Riddler decided to pool resources to bring him down. To this end, Elliot created for himself the persona of Hush (The name is said to have been coined by the Scarecrow, referencing the lullaby "Hush Little Baby" due to its subject being a child who could never be satisfied with what he had).[1] The name fits for Elliot, who prefers to employ guile and manipulation in place of noisier tactics such as gunplay.