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 Long House. Regis is also the Great Khan's law enforcer and as such will warn the Courier to watch their step. Although loyal to Papa, Regis harbors doubts about his leader's recent decisions, especially his newfound friendship with the Legion.
Interactions with the player character
|This character starts quests.|
|This character is involved in 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 the player character becomes Papa Khan's heir, it is possible for them to quietly kill Papa Khan, take his Great Khan spike helmet, and then become the new leader of the Great Khans. Speaking to Regis after this transition (which is instantaneous) will allow a Legion player to decide the fate of the tribe.
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.
- He is one of the few named characters affected by the Sneering Imperialist perk.
- Regis sleeps beside a stack of pre-war books and magazines, including Lad's Life, Milsurp Review, and Programmer's Digest.
Regis appears only in Fallout: New Vegas.