Andrew Ryan is a fictional character in the BioShock series by Irrational Games. He serves as the primary antagonist of the first half of the first BioShock and a minor character in its sequel, BioShock 2. Ryan is an idealistic business magnate in the 1940s and 1950s; seeking to avoid scrutiny from governments and other oversight, he ordered the secret construction of an underwater city, Rapture. When Ryan's vision for a utopia in Rapture collapsed into dystopia, he hides himself away and uses armies of mutated humans, "Splicers", to defend himself and fight against those resisting him, including the player-character Jack within the first game.