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Derek is a 15-year-old boy who was raised in Canterbury Commons by Louis Pacion and Daisy Roe, a pair of traders who met and settled down. When they were killed in separate raider attacks on their caravans (six years ago for Daisy and three years ago for Louis), Derek was left to his "Uncle Roe", the town keeper. Since then, Derek's been a quiet and morose child. He works around town as a general assistant, but he doesn't really say much unless it's necessary. He harbors a secret crush on Machete but doesn't have the courage to approach her. He devotes much of his free time to reading Hubris Comics.[1]
Derek also knew Scott Wollinski before Scott became The Mechanist. Derek is responsible for escalating the conflict in Canterbury Commons to dangerous levels; an optional conversation topic reveals that Derek convinced Scott to become a superhero and fight the AntAgonizer after she destroyed a robot.
The Superhuman Gambit: Asking him about the Mechanist and AntAgonizer will reveal that Joe Porter knows the AntAgonizer's real name. This information can be used in a speech check to get the AntAgonizer to peacefully surrender. If the player finishes the quest, he will complain about how boring it is in Canterbury Commons. If all of Canterbury Commons is murdered by creatures and/or the player, the reward for the quest is given by Derek who, like all children in Fallout 3, cannot die.
Derek will suggest different superhero identities for the player depending on your attributes: "Super-Humongous" for characters with high Strength or Endurance, "Awesome-Claw" for characters with high Agility or Charisma, "The Brilliant Shadow" for characters with high Perception or Intelligence, or "Incredibly Lucky Guy/Girl" for characters with high Luck. If your character has no high attributes, he'll say you wouldn't make a good superhero.
If you kill Uncle Roe, Derek will no longer interact with you; he will only say, "Go away, I hate you."