Roger Warwick

Roger Warwick is an Institute synth posing as a farmer living at Warwick homestead

Background
When the Sole Survivor speaks with Janey, Roger's daughter, she says that her father is a lot nicer than he used to be. This change came when the human Roger Warwick was replaced with a synth built by the Institute some time before the Sole Survivor's arrival.

He is a key component of the bioscience division's testing of genetically modified seeds on the surface. Terminals located inside the bioscience wing of the Institute indicate that Roger, along with the crops, will be retrieved by the Institute. All evidence of the initiative will be purged, hence implying his family with the rest of the settlers at Warwick homestead will be terminated once the experiments have concluded.

The Sole Survivor may also discover Roger's true identity by encountering Cedric Hopton, who carries Bill's letter, which calls for a mercenary to take the impostor Warwick out for 500 caps.

Appearances
Roger Warwick appears only in Fallout 4.

Bugs

 * If Roger Warwick is killed after obtaining Warwick homestead as a settlement through Building a Better Crop without acquiring Warwick Homestead: Greenskins, it will randomly appear and direct the player to talk to Preston Garvey. After doing so, the quest will remain in the player character's Pip-Boy indefinitely.
 * If Building a Better Crop is completed before completing Warwick Homestead: Greenskins, one will not be able to interact with him aside from trading, resulting in the only way to finish the quest being killing him and returning to Preston Garvey.
 * Roger can become stuck in a water tank at the settlement; this will cause him to be unable to be talked to. To fix this, if one has unlocked Warwick homestead as a settlement, they must first build a staircase leading out of the tank, ring a bell, wait an hour, and he should be free. If the settlement has not been unlocked, on PC, one can use the console command and teleport Roger Warwick (ID: 00048ba9) to their position.
 * If one does not have Warwick homestead as a settlement, they can use power armor to jump inside the tank with him and walk "shove" him towards the broken catwalk. He will pop up out of the water long enough to give the player character the talk option and trigger the dialogue, therefore unlocking Warwick homestead as a settlement.
 * Sometimes Roger will spawn in the floor of his home. He cannot be interacted with while in this state.
 * Reloading a save prior to rendering of the Warwick homestead can solve this issue.
 * Leaving the area and coming back at a later time may solve this issue.