Decanus Severus

 is a Legion member living in the Mojave Wasteland in 2281.

Interactions with the player character
Decanus Severus is found in Cottonwood Cove. He is part of a free form quest in which the player may trade NCR Dog Tags to him for munition or victuals (after passing a barter check with Phoenix who pays 10 caps per tag if the check is not passed).

Behind the scenes
In Latin, Decanus means "chief of ten", where as Severus is a reference to the Roman Emperor, Septimius Severus, who was a Roman Emperor from 193-211.

Appearances
appears in Fallout: New Vegas.