Regis

Regis is a Great Khan living in the Red Rock Canyon

Background
Regis acts as Papa Khan's right hand man. This position is also literal, as Regis takes the seat to Papa's right in the Great Khan's longhouse. Regis is also the Great Khan's law enforcer and as such will warn the Courier to watch their step. Although loyal to Papa, believing him to be one of the best leaders of the Khans, Regis harbors doubts about Papa Khan's recent decisions, especially his newfound friendship with the Legion.

Jack describes him as, "Cool. Scary, but cool," while Jerry describes him as a "hulking reprobate."

Quests

 * Oh My Papa: Regis will pull the Courier aside after attempting to convince Papa Khan to break his alliance with the Legion and explain how to get Papa to change his mind.
 * We Are Legion: After completing the quest for the Legion, Papa will name the Courier his heir. Speaking to Regis after Papa Khan is killed will allow a Legion player to decide the fate of the tribe. It is also possible to hand leadership over to Regis and allow him to lead the Khans north to begin a new life.

Effects of player's actions

 * Regis will not offer the quest Oh My Papa if the Courier has earned a vilified reputation with the Great Khans, stating that he "should not be talking about this with an outsider." This can be fixed by picking up Karl's journal, talking to Papa again and leaving the longhouse.
 * If Papa Khan is killed, Regis will become the leader of the Great Khans unless the Courier is Papa's heir. Without Papa Khan's guidence, Regis will agree to an alliance with the NCR, ultimately at the detriment of the Khans.

Appearances
Regis appears only in Fallout: New Vegas.