Alerio

 is an informant for Caesar's Legion. He watches all activity at The Strip and reports the information back to Caesar.

Background
If Vulpes Inculta has been killed, he is the person who informs the Courier that Caesar wishes an audience with him. Alerio will also provide you with the Mark of Caesar which will provide safe passage to The Fort.

Quests

 * Render Unto Caesar: If Vulpes Inculta is killed before the Courier reaches the Strip, Alerio will invite the Courier to meet Caesar himself.

Appearances
appears in Fallout: New Vegas.

Behind the scenes

 * "Alerio" is a Latin word meaning "of or relating to gambling."

Bugs

 * Long after inviting you to meet with Caesar, he may appear, run up to the Courier, and initiate dialogue saying only "What do you need?" while your only option will be to end the conversation. This can even occur inside private hotel suites. (This can happen if you never met Caesar, or even if you have already killed Caesar).
 * When this occurs, Alerio may become permanently stationary at the Lucky 38 Hotel's entrance.
 * If you kill him when this occurs, he may respawn after a random amount of time.

Алерио