Frank Horrigan

Frank Horrigan is the final boss of Fallout 2. He is a specially modified Super mutant with cyborg armor who works for the Enclave, the evil post-apocalyptic remnants of the United States government. Horrigan was originally a high-ranking and exceptionally vicious secret service agent working for the Enclave president, who started becoming a mutant after coming into contact with the F.E.V. Virus at the Mariposa Military Base. The Enclave scientists brought him back to their labs to be studied and experimented on, and decided to further mutate him into their ultimate killing machine. Later, Frank Horrigan was permanently encased in a special suit of robotic Power Armor designed specifically for him.

In the game, Frank Horrigan is first seen murdering a family of helpless peasants (including a little boy) while the main character is forced to watch. Later, he can be seen in a recording where he kills a Brotherhood of Steel soldier who had previously met and helped the player. In another recording, he kills the friendly Deathclaws of Vault 13.

The player finally gets to confront Frank Horrigan inside the Enclave Oil Rig at the very end of the game, after they kill the Enclave president. It is possible to convince a nearby squad of Enclave soldiers to defect and help in the fight with him. When Horrigan is defeated, his gut explodes and he breaks in half at the waist. Even then, he still manages to mock the player and tell them they will also die when the oil rig self-destructs before he finally dies.