Clements made his way to Diamond City a while before 2287, with no intention of settling down. He was inspired by Diamond City's residents' search for a greater purpose though, building institutions such as a school and the chapel rather than merely focusing on survival, and felt like it was a good place to remain.[1] Clements is a believer in everyone being equal. This includes their religion. If anyone needs a house of worship, the All Faiths Chapel is open to everyone, though he cannot guarantee that he will know how to guide someone in their worship.[2][3]
Wedding Day: Clements performs the marriage of Miss Edna, a Miss Nanny, and Mister Zwicky should the Sole Survivor convince Miss Edna of the importance of love. He can later be heard saying that he thinks the marriage of a human and a robot is strange, but he does not think God would mind.
During the wedding, Pastor Clements will say "by the power invested in me..." which is incorrect (it should be "by the power vested in me").
Examination of Clements' skin indicates that he may suffer from generalized vitiligo, a condition that causes the loss of pigmentation in patches of skin across the body.
If Pastor Clements is killed, the members of his congregation will comment saying "This isn't a chapel anymore." If Nick Valentine or Piper is present, the members will attack the Sole Survivor.
↑The Sole Survivor: "What brought you?" Clements: "Came on this place a while back. Didn't intend to stay at first, but I felt something here. A good feeling. People here are searching for something more than just getting by. They built a school, shops, the power plant, and even this chapel. What about you? What brings you here?" (Clements' dialogue)
↑The Sole Survivor: "This your chapel here, Pastor?" Clements: "Well, that depends. I suppose I should say this chapel really belongs to God. But since I never get around to deciding which God in particular, I guess you could say it belongs to all of them. Now if you ever need a quiet place to sit down and ponder the Almighty, in whatever form strikes your fancy, we're always open." (Clements' dialogue)
↑Clements: "We're always open. Anytime you need to sit and talk to whoever you think is up there." (Clements' dialogue)