Papa Khan is the Great Khans chief. He can be found inside the Great Khan longhouse in Red Rock Canyon. The longhouse is the only concrete building in the village and is located to the right as one enters the Canyon. At night, he can be found sleeping behind the locked door.
Despite the reputation surrounding the Great Khans, Jack describes Papa Khan as "a softie at heart."
Oh My Papa: Papa Khan cannot see that his alliance with Caesar's Legion is a bad idea. He needs to be convinced no matter what.
For the Republic, Part 2: When approaching him for his help in the upcoming battle, it is impossible to merely talk him into an alliance with the NCR. Instead, the Courier is given the options of either assassinating him or convincing his lieutenants to speak out against him.
If the player character succeeds in the quest We Are Legion, thus slaughtering the NCR soldiers at Camp Forlorn Hope, Papa Khan will name the Courier his heir and offer them to rule the Great Khans after his death. Karl, at his left, will also greet them for their success. After quietly killing Papa Khan, the player character can then speak to Regis to gain more Khan fame, leadership, and Karl will leave Red Rock Canyon entirely. Caesar does not have special dialogue by choosing this option.
On the other hand, if the player completes the quest Oh My Papa, the contempt the Legion's envoy, Karl, has for the Great Khans is revealed. Infuriated by this deceitful insult, Papa Khan shouts at the other Khans in the longhouse to attack Karl, who is quickly killed. At Papa Khan's command, the alliance with Caesar's Legion is severed permanently. Upon meeting the Courier, Caesar can refer to this, saying "The Great Khans aren't exactly clamoring to fight for my Legion now."
After Papa Khan breaks the alliance with the Legion, a number of options exist. The Courier can convince Papa Khan that his tribe is in terminal decline, driving him to fatalistically seek out a final great battle for his Khans at Hoover Dam. Papa Khan's broken spirit leads to the eventual disintegration of the Great Khans.
For a different Speech check, the Courier can convince Papa Khan to redirect his hopes for the future, from revenge on the NCR to claiming renewed greatness "unburdened by the past." Greatly impressed by the Courier's words, Papa Khan vows to pack the camp up and leave as soon as fighting at Hoover Dam starts. This is done successfully, and Papa Khan's wish to "leave a legacy of greatness" when he dies is fulfilled as his Khans, aided by the Followers of the Apocalypse, "carve a mighty empire out of the ruins of the Northwest."
If Papa Khan and Regis are killed, the Great Khans are severely wounded by the loss of their leaders, but try to rebuild once more in the territory of former Idaho.
Playstation 3 Occasionally, when asleep, Papa Khan floats in mid-air over the side of the bed. Initiating conversation can cause him to become stuck in the bed or the floor when he is awoken. This is not a major issue, as one can still talk to him. This bug can be fixed by leaving the building, waiting, and returning. [verified]
PC Very rarely, one will encounter a glitch where Papa Khan is stuck in a tiny outhouse looking building behind the building he usually is. There is no known cause or fix for this glitch. This glitch is seen here. [verified]
↑The Courier: "Who are you?" Papa Khan: "You march all the way out to Red Rock Canyon, enter my home as bold as you please, and you have no idea who I am? You've got guts, I'll give you that. Well, then, let me educate you: I am the chief of the Great Khans - the Khan of Khans, if you like. This is my tribe and these are my people." (Papa Khan's dialogue)
↑The Courier: "Tell me a little about the Great Khans." Jack: "They're family, you dig? They've always looked out for us, made sure we had something to eat and a place to crash. Papa may look like a big angry bear, but he's a softie at heart. Regis is cool - scary, but cool. The rest are all pretty groovy, even little Jerry." (Jack's dialogue)