Gabban

Gabban is found in Nipton, but only if Vulpes Inculta is met for the first time in New Vegas instead of in Nipton, and if in that initial New Vegas meeting Vulpes is killed by the courier. In this situation, upon the courier's subsequent traveling to Nipton, the courier will find Gabban leading the legion there.

His only conversation with the courier is to say: "Ha, and we were just finishing up here. To think that we might have missed you!  If anyone belongs on a cross, it's you!  For your crimes against the Legion, you will die!" He is worth 30 xp.