Keller (Fallout: New Vegas)

Keller is an NCR Ranger in Westside $$

Background
Keller, together with Lt. Boyd, has been part of an ongoing New California Republic investigation into local chem runners. Being undercover, he has been gathering information for months, which led to the arrest of a merchant named Price, who was found supplying ingredients for the production of chems to local gangs.

Keller then continued to gather information by acting as one of Price's associates, dealing with any incoming business while claiming that Price is pursuing a business opportunity elsewhere. Keller had previously been suspicious about the Camp McCarran quartermaster, Daniel Contreras, which turned out to be one of Price's former suppliers.

Appearances
Keller appears only $$

Bugs

 * By default, the dialogue option that requires passing a check for 7 Perception or Intelligence always fails, as the game checks these attributes for Keller (who has 5 in both) rather than the player character.
 * This can be fixed by planting items in Keller's inventory that increase these attributes. The Elite Riot Gear Helmet or Advanced Riot Gear Helmet grant +2 Perception, while Dr. Klein's scrubs, Dr. Mobius' scrubs and Dr. Mobius' Glasses each grant +2 Intelligence.
 * Killing Keller with a silenced weapon after passing two of the Speech checks will circumvent the bug in Dealing with Contreras where the player does not receive This Machine and the final piece of dialogue does not trigger. This has to be done prior to returning to Contreras to report that Keller has been dealt with.
 * After talking with Keller and passing the INT/PER check, if one chooses to attack and kill Keller after he says the player is under arrest, upon returning to Contreras, the result and dialogue option will be the same as if you kept Keller alive and bribed him. If the player kills Keller in this order, they will not take a hit to their reputation with the NCR, and will gain access to the stash and This Machine. Though this removes the ability to turn him in with Lt. Boyd.
 * Sometimes, even if killing him without NCR reputation loss, the NCR will be hostile. A fix for this is to reload to the save after killing him but before the NCR went hostile and travel to the New Vegas Strip.
 * If the player says that they will rat out Contreras, and then kills Keller, no reputation will be lost with the NCR.