The Replicated Man

 is a Fallout 3 quest. It is also an Xbox 360 and PC achievement.

Objectives and walkthrough
The quest is given to you by Dr. Zimmer in Rivet City, who asks you to track down an android that has escaped. The android has gone sentient and independent and does not wish to return.

This quest can also be started by finding a tape recording in one of the following locations: Red's Clinic in Big Town, Eulogy's Pad in Paradise Falls, Craterside Supply in Megaton or in Tenpenny Tower's Clinic.

At any time during this quest, you may be approached by a woman named Victoria Watts of The Railroad, an organisation dedicated to helping androids gain their independence. She asks you to tell Dr. Zimmer that the android is dead, and gives you a piece of his body to support your claim.

To start tracking down the android, Dr. Zimmer asks you to talk to Dr. Preston in Rivet City. Preston gives you one of the android's recordings and tells you that similar tapes were sent to almost every scientist in the Wastelands. Accordingly, you can now find these holotapes in various locations, mostly in clinics. You need 2-3 of these tapes until your quest is updated. Additionally, instead of receiving holotapes from clinics, you can go back to Megaton and speak with Moira in the Craterside Supplies. You will have a conversation option asking her about the android, if you succeed, the quest will be updated. You will then need to find Pinkerton in Rivet City. After asking around in Rivet City, you will find that he lives in the broken-off bow section at the front of the ship.

Since he's rather hard to get to, may want to use this opportunity to finish one of the sub-goals of The Wasteland Survival Guide, which also requires you to talk to Pinkerton.

There are two ways to enter the bow section, either by picking a locked door (100 lockpicking skill required) on the starboard side or by entering an underwater door where the bow sections has broken off. The latter requires you to swim pretty far through radiated water. Upon entering, you will also be attacked by several mirelurks and may come across several traps and mines.

When you speak to Pinkerton, he will tell you that the android's name is Harkness and that it was him who performed the facial reconstructive surgery and the memory wipe. He will also tell you that his mind was not actually wiped, rather that his old identity had been buried deep and that it can be reactivated by speaking a certain code to Harkness. He now works as the security chief in Rivet City, and was actually the person who greeted you when you first entered Rivet City.

You know have several options to finish with the quest:
 * You talk to Harkness and convince him that he's an android. You will receive his A3-21's Plasma Rifle and +200 karma as a reward.
 * You show Dr. Zimmer the android part and tell him that he's dead. You will receive 50 caps and good karma.
 * You tell Dr. Zimmer the android's human name and the code to uncover his memories. You will receive the Wired Reflexes perk and -200 karma.

On the XBox 360, there appears to be a bug which allows you to get either of Zimmer's rewards after telling Harkness that he is an android.