|關於the character in Fallout 3，參見Derek Pacion。|
|“||My head hurts! What... who said that?||”|
Derek is a self-proclaimed "grandmaster cook", and as such wishes that he had a kitchen of his own, but Becky won't hire him because of his instability due to his addictions. Derek is clearly insane and talks mostly incomprehensible nonsense. He borrowed the book "The Lavender Flower" from Becky, but didn't like it because it contained "too much kissing" and he threw it away somewhere in the east side of the Den.
|This character is a temporary companion.|
|This character is a permanent companion.|
|This character is a doctor.|
|This character is a merchant.||Sells: -|
|This character can modify weapons.||
|This character starts quests.||
|This character is involved in quests.|
|This character has a talking head.|
- Get book from Derek: The Chosen One must retrieve a book for Becky that he borrowed. After the completion of this quest, he no longer talks to the the Chosen One, apart from through floating text.
Derek appears in Fallout 2.