Capt. Maxson was right. This place is death. I'm writing this so that if we don't make it back, someone, some day, might find out what happened to us.

Sergeant Dennis Allen[1] was a United States Army member originally serving under Captain Roger Maxson.


In 2077, Allen was amongst many soldiers in Mariposa to rebel against the United States government. However, during the Exodus from Mariposa to Lost Hills,[2] a faction led by Allen split from the other members, taking some technology and weapons with them. Other members of the team included Soto, Jensen, and Camarillo.[3]

After twenty days, they successfully made it to the West Tek Research Facility, but radiation levels began to rise as soon as the crater was in sight. They concluded that with their armor and Rad-X supplies they'd be fine for a least a day of exploring and that the technology they had the potential of recovering was worth it.

They climbed down the crater to the first level and as there wasn't much of value on this level, they pushed on. Unfortunately for them, the security sensors had been burned out on the first two levels, but not on the third. Jensen was killed before he knew what had happened. Allen tried to regroup, but only Soto and Camarillo made it back up here to the first level with him. All three of them eventually died because of a power armor air filtration failure. Before he died, Allen logged what happened to the expedition into a holodisk which was later found by the Vault Dweller.[4]

Interactions with the player characterEdit

Interactions overviewEdit

General Services Quests
Companion: Icon cross
Talking head: Icon cross
Merchant: Icon cross
Modifies items: Icon cross
Doctor: Icon cross
Starts quests: Icon cross
Involved in quests: Icon cross



Allen appears only in the first Fallout as a corpse.


  1. The first name is given only in the Fallout Bible timeline. In the game itself he is only referred to as "D. Allen".
  2. "Oh, well, in the Exodus, the Brotherhood split into two groups. The group that broke away robbed the others of some of the weapons an-and went southwest. About ten years ago, we sent out knights to look for them, but all they found was ruins. No one knows what happened." – CABBOT.MSG, line 1114
  3. The exact number of Allen's followers is not known
  4. "I journeyed to this Brotherhood. Thinking they would have the knowledge I sought, I tried to join them. They required me to go on a quest before they would let me in. Thinking it would be a short and easy quest, I agreed and set off for the place they called the Glow. The horror of atomic war was never so obvious to me until then. The Brotherhood was surprised to see me, and even more surprised to see that I had not only survived their quest, but succeeded." – Vault Dweller's memoirs