Frank Horrigan was born in 2211.[Non-game 1] A huge brick of a man,[4] he used to serve as the personal bodyguard of President Richardson until an undocumented psychotic blunder caused him to be reassigned to wasteland patrol duty.[5][Non-game 3] It was on one of those wasteland expeditions that he came into contact with the Forced Evolutionary Virus at the Mariposa Military Base and started mutating into a super mutant. The Enclave decided to send him to the Oil Rig for study.For two years, Horrigan was operated upon, and studied by the Enclave scientists while he gradually mutated into a super mutant, both physically and mentally. Col. Dr. Charles Curlingused him as a guinea pig for experiments with his modified strains of FEV, considering the result somewhat successful.[6] He was kept under heavy sedation and only allowed to be conscious for short periods of time, during which several violent incidents ocurred.[Non-game 5] Viewed as a "genetically engineered freak" by his own men, he had been experimented upon and underwent so many changes to his DNA and physiology that he could be described as a one of a kind mutant, becoming more machine than manWhen tests began to run dry in January 2239, the Enclave decided that it was time to redeploy him as a field operative. He was fitted with a custom-engineered set of power armor powered by a back-mounted supersized microfusion reactor,