They will also be hostile if the Courier is wearing a hostile faction's clothing (for example, NCR armor) while wearing the Mark of Caesar.This occurs if the player character travels with a companion that is hostile (such as Boone) towards the Legion. Caesar's Legion may still be hostile towards the player character even while carrying the Mark.Being a quest item, the Mark of Caesar cannot be dropped, even if the Courier sides with the New California Republic in the Second Battle of Hoover Dam.For example, if the Courier had a reputation of Wild Child prior to receiving the Mark of Caesar, they would now be Idolized among Caesar's Legion. The Mark of Caesar effectively removes all of the Courier's infamy.The Mark allows safe passage to Caesar's camp, even if the player has a low reputation with Caesar's Legion. It is a necklace given to the player character by Vulpes Inculta (or Alerio if Vulpes was killed) upon exiting The Tops casino after completing Ring-a-Ding-Ding! as part of the quest Render Unto Caesar. The Mark of Caesar is a quest item in Fallout: New Vegas.