The Golden Age's Mr. Terrific was Terry Sloane, a self-made millionaire whose photographic memory, Olympic-level athletic skills, and mastery of the martial arts made him a virtual Renaissance man.
After graduating college at age 13, he eventually became a renowned business leader in the community. Having accomplished all his goals, he felt there were no challenges left for him to pursue, leading him towards suicidal tendencies.
However, upon seeing a young woman jump from a bridge, Sloane reacted quickly and saved the woman, Wanda Wilson. Sloane assisted her brother, who had been caught up in a gang, by adopting a super hero identity: the Mr. Terrific persona. This provided him with what he had been missing; a sense of accomplishment. He then created the "Fair Play Club" to stymie growing juvenile delinquency.