Born Oswald Chesterfield Cobblepot, the Penguin was teased very much in his childhood due to his short stature, obesity, and bird-like nose. These traits made him an outcast in his rich, debutante family. Their rejection drove him to become evil. These are contrasted against the more aggressive and specific wealth gathering origins.Which specifically states that Oswald Cobblepot neither is nor ever was insane and merely used his astute mind and scientific skills in developing weapons to intimidate and control others.He disapeared without a trace.