“Well done, Mister Burke! What a grand display of fireworks! I almost wish there was another nuke we could detonate. You don't see that very often.”— Allistair Tenpenny, commenting on the destruction of Megaton
An 80-year-old Englishman-turned American entrepreneur discovered the tower and saw it as an opportunity to provide residents with a standard of living enjoyed by the affluent in the days before the nuclear armageddon.[Non-game 1] A rich eccentric, bored with life and looking for new challenges, Tenpenny enjoys sniping at wasteland creatures, ghouls, and the occasional visitor from his suite atop Tenpenny Tower.[Non-game 1] Tenpenny spends most of his days alone, save for the company of Mister Burke and Susan Lancaster on occasion.
Tenpenny is a recluse, never leaving his penthouse suite, although it is mentioned he has a seat reserved in Margaret Primrose's cafe.
He orders his daily meals from Margaret Primrose, always ordering an "iguana bit sandwich, no salt, with a peeled pear on the side."
He carries a sniper rifle which he uses to shoot at things in the wastes during what he calls a "Wasteland Safari."
The Power of the Atom: The Lone Wanderer can stand on Tenpenny's balcony with Allistair and Mister Burke and together witness the destruction of Megaton in a nuclear explosion. Choosing to blow up Megaton for Tenpenny and Burke will lead Tenpenny to give the Lone Wanderer a suite in the tower.
Tenpenny Tower: The Lone Wanderer can convince Tenpenny to give his permission for the ghouls to move in. After the ghouls are allowed to move in, Roy Phillips and Tenpenny will have a "disagreement" and Tenpenny will have an "accident," which results in Tenpenny's body being stuffed in a storage closet.
Slave Hunt: Tenpenny is the former owner of Mei Wong, and is mentioned in this unmarked quest.
Effects of player's actions
Gustavo will take over Tenpenny Tower if Tenpenny is killed.
If Tenpenny is killed by the Lone Wanderer by a shot to the head, then the people and guards of Rivet City will talk about his death.
In a Fallout 3 afterthoughts feature, Emil Pagliarulo mentions Allistair Tenpenny, in that he traveled to the Capital Wasteland from Great Britain in order to seek his fortune. Pagliarulo stated that by mentioning small details about the state of the rest of the world, characters like Tenpenny can "serve as a catalyst" for players' imaginations.[Non-game 2]
↑Fallout 3 loading screen: "Allistair Tenpenny now rarely leaves the comfort and safety of his penthouse suite. His is a madness reserved for the obscenely rich."
↑Fallout 3 loading screen: "Tenpenny Tower is the brainchild of Allistair Tenpenny, a British refugee who came to the Capital Wasteland seeking his fortune."
↑ 1.01.1Fallout 3 Official Game Guide Game of the Year Edition p.60: "Allistair Tenpenny An 80-year-old Englishman turned American entrepreneur, the man who discovered the tower saw it as an opportunity to provide residents with a standard of living enjoyed by the affluent in the days before the nuclear Armageddon. A rich eccentric who's bored with life and looking for new challenges, he enjoys sniping at Wasteland creatures, Ghouls, and the occasional visitor from his suite atop Tenpenny Tower." (Fallout 3 Official Game Guide Game of the Year Edition Wasteland Census)
↑Emil Pagliarulo: "Allistair Tenpenny came to the Capital Wasteland from Great Britain to seek his fortune, so that alone tells you that the U.K. was also hit in the war. And if he came to U.S. to succeed, that says a lot about how screwed up Europe must be. So we just allude, a little bit, to the state of the rest of the world. We like to leave a lot to the players' imaginations, and somebody like Tenpenny serves as a catalyst for those thoughts." (Fallout 3 Afterthoughts)