I am pretty sure that your dad ticks the overseer off so he turns him into a dog to keep his mouth shut
in fallout 3 to do the tranquility lane is hard you have to go into the abandoned house press x to the items there (search it up on youtube) then a computer will come then talk to the girl next to the swings then open the door out of there and then you will see your dad
You find him after completing "Tranquility Lane" in Vault 87. The vault is hidden in "Smith Casey's Garage" somewhere to the west. Just continue on the main story quest and you'll get there eventually.
your dad is in vault 112. If you want to skip to the part where you meet your dad without doing any quests just go there when you come out of vault 101 and it skips all quests up to tranquility lane
Your characters Dad, James isn't in greyditch.
in the citadel but you can only get in after completing the quest with your dad
To start up "project purity"--- To cleanse all the water---
SPOILER: no he is in vault 112 in smith Casey garage
Yes, but we never saw him.
Your Dad kills himself taking down an Enclave officer, stopping the officer from getting valuable information about Project Purity
It is a quest added after finding dad or Docter Li.
Yes, if you follow the main storyline you will finally meet him in vault 112.
if you are sent there by doctor li before you find your dad find the holotapes in the main part of project purity but if you are there after you find your dad clear the whole place of mutants