(Capcom's primary storyline)
Aaron was an officer of the Raccoon City Police Department.
Surviving longer than many of his colleagues, Aaron ended up fighting alongside Marvin Branagh's batch of officers, who fortified themselves within the RPD. precinct.
He is somewhat idolized and seen as a role model by the other police officers, including Kevin Ryman, who even asks Aaron for advice on how to deal with the situation in the ""desperate times"" Scenario in Resident Evil Outbreak File 2. Apparently, Aaron also was fond of gardening.
As an NPC
After doing the battle plans, he can be located outside in the emergency stairs shooting at zombies and Crows. After his death, he'll drop a Shotgun (NORMAL mode) or a Handgun with 8 bullets in HARD mode.
As a Playable Character
Aaron can be unlocked simply by clearing "Outbreak" scenario on any difficulty. He comes in a set with Raymond and Arthur. After doing so he can be purchased for 5000pts. In File #2 he is unlocked from the start and can be bought for 500pts. Data Convert may be used to bypass purchasing him in one of the games. (as any purchases made are transferred to the other game as already bought)
- After finding his body, Kevin makes a comment that he was his hero.