Regis

 is Great Khan living in the Red Rock Canyon in 2281.

Background
Gejdid

Interactions with the player character
Speaking with Regis in the Khan's Red Rock settlement will initiate the quest Oh my Papa.He is not convinced that the NCR's actions at Bitter Springs were commited intentionally. If you help Regis usurp control of the Great Khans from Papa Khan he will send his forces as aid to the NCR during the Second Battle of Hoover Dam.

Appearances
appears in Fallout: New Vegas.