Perez (Marine)

"Sir, Corporal Perez, "A" Company, CP's this way."

- Corporal Perez, upon greeting the Master Chief during the level, "Metropolis".

Corporal Perez is a UNSC Marine assigned to "A" Company of the 405th. He fought in the First Battle of Earth as well as the Battle of Installation 05.

The First Battle of Earth
In Halo 2, the Master Chief met Corporal Perez in the proximity of a Marine field command post in New Mombasa where some Marines are held up, wounded, and making a last-ditch stand against the Covenant occupation. He led Master Chief to Sergeant Banks' position on the roof, and then he simply became another background Marine. Based upon his use of the expletive "coño" during the trailer, he is presumed to be of Spanish nationality or descent.

Search for the Index
Perez is mentioned, but not seen, during the Battle of the Library in which the UNSC, and the Arbiter race against each other to gain possession of the Index, while the Flood try to stop then from getting possession of the Index, which the Covenant call the "Sacred Icon". The cutscene shows Miranda Keyes reaching for the Index with Sergeant Johnson saving her after a Flood tentacle fails to hold. He says a short comment to her and then he yells out, "McKenzie? Perez? How's our exit? Do you hear me, Marines?". That's the last link to them from the game. As the Arbiter approaches Keyes and Johnson's position within the Index's chamber, he steps over the remains of two Human Marines, presumably McKenzie and Perez. They were most likely killed by remaining Combat Forms or Flood parasites.

It is also possible he was captured by Tartarus beforehand, as on the level Gravemind, you need to rescue some Marine POWs.

Second Battle of Earth
Perez possibly appears when fighting at Commander Keyes' base on Earth. When the Chief makes his way towards the hangar, if he stops at the caves with Sergeant Stacker and other Marines and waits around, a Marine that sounds very much like Perez will speak to the Chief, and say something along the lines of "Sir, remember me? New Mombasa?". This is a reference to when he helped the Master Chief take down the Scarab during the First Battle of Earth.

Quotes

 * "Sir! Corporal Perez, A Company! CP's this way! The Lieutenant got hit as soon as we dropped in!" - To the Master Chief in Marine command- house in the level Metropolis.
 * "Uh, Sergeant Banks, Ma'am. He's pinned down up top. Come on, I'll show you."- To Cortana after she asked him who's in charge.

Trivia

 * Before the end of the level Quarantine Zone there are a bunch of dead Marines where Perez may have been positioned, so it is likely he was killed.
 * He is probably named after the Bungie programmer Adrian Perez.