|This article is fanon and not part of the Halo universe. The author of this fanon is Shotgun02.|
|Death date||Still active.|
|Affiliation and military information|
|Battles||■Fall of Reach
■Unknown after the Fall of Reach.
Rex-A048 born Rex Axen is a Spartan III and is part of Team Romeo/Juliet, his part in the team is the team sniper, his call sign was Romeo-3.
- "He rarely shuts up unless you threaten to kick him in the balls or cut them off, works everytime. Trust me it does."
- —Linda-A179 to new Juilet-6, Reach 2552.
Rex-A048 is a Spartan with a lot of annolying catch phrases, even though the team find some of them funny he sometimes says one at a time when they aren't needed. Dispate that he can be quiet when he wants to be or when Linda-A179 threatens to kick or cut off his balls. He is also called "Pervert first class" as a nickname rank.
- "My god Rex, you trying to die? Because if you are I can do that for you."
- —Robert-A037 to Rex-A048 after having to save Rex from a Elite.
Being a sniper Rex stays at the rear of the team giving sniper surport but he is not the best at no scoping enemies even at close range, he carries a M6G-Magnum as a sidearm which he rarely fired. His skills with the SRS99 are okay but not as good at close range.