Aaron had thick, short, uncombed brown hair and yellow eyes, and he was sixteen years old. He grew up in Slateport City where he witnessed several of Team Aqua's cruelties. His partner was a Minun that he found nearby. Aaron saw no real interest in challenging gyms, and contests didn't show any usefulness to him. Team Aqua's antics constantly irritated Aaron, and they were obsessed with water when most of the world is already water. At one point, Team Magma had gone to the city to thwart Team Aqua, and Aaron had assisted them; Aaron served as a scout for them, and after they finished their mission, one of them handed Aaron a coin with their emblem on it. He told Aaron to come find them if he wanted to join them.
Aaron was currently on the outskirts of Lavaridge Town. He had his Minun in its pokeball. Aaron had a shoulder strap backpack on as well as a pair of black jeans and a gray t-shirt; he also had on a pair of black leather biker gloves. Aaron found the entrance to the Jagged Pass and entered it. He scaled some of the walls as he approached the spot that he was looking for. He then saw the grass rustling nearby and called out his Minun. Out of the grass came a Spoink who happily bounced over to Aaron and smiled. Aaron patted it on the head and walked away only for it to follow him. "Go away." Aaron said glaring at it causing the Spoink to start crying. The crying was very loud and annoying which prompted Aaron to sigh. "If I catch you, will you stop crying?" Aaron asked pulling a pokeball from his bag. The Spoink immediately perked up when it saw the pokeball and hopped inside causing Aaron and his Minun to smile as they had a new partner. Aaron recalled both of his Pokémon and continued moving through the Jagged Pass.
Aaron pulled the Magma Emblem from his pocket and held it up and watched it start glowing brighter as he got closer to the hideout. At one point, it was glowing violently until Aaron saw a cave open up. Aaron carefully snuck inside and hid behind a boulder as two grunts walked by. "Did you hear about those kids breaking in?"
"Yeah, but we'll take care of em." One of them said as they continued walking.
"Better be careful if I want to talk to the leader." Aaron thought to himself as he continued walking through the base evading the guards as he wandered around the expansive base. Aaron was walking by a room full of high-tech machinery that he ducked behind when he heard voices. "Kid you're going down.
"I won't let that happen." Aaron heard a feminine voice say.
He peeked from behind the machinery to see a girl battling a Team Magma admin. "Is that May?" Aaron asked himself; he saw her appear on TV in several contests. The admin lost the battle and May continued moving. Aaron ran over to the down admin.
"Oh great another kid. My Pokémon are down, so just go on." He said angrily.
"I'm not here to fight you. I'm here to help you." Aaron said helping him up and handing him a few revival herbs from his bag.
"Just stall that girl long enough for Maxie. She's probably far ahead, so take this passage and cut her off at the door to Maxie's office." The admin said pushing a panel on the wall where a door was revealed. Aaron thanked the admin and ran through the passage. Aaron hid behind a rock and waited until he saw May running towards the door.
Aaron stepped out from behind his hiding place where May stopped in front of him. "Are you here to help?" She asked.
"I'm here to stop you." Aaron said pulling out his pokeball. "Spoink, I know that you're new, but it's time to show me what you got!" Aaron shouted throwing his pokeball.
"Combusken, let's go!" May called out throwing her pokeball. "Use peck."
"Spoink, use psybeam." Aaron said as his Pokémon jumped up high and shot the Combusken with the super effective psychic attack. "Psybeam one more time." Aaron called out as his Spoink readied another attack.
"Combusken, mach punch." May called out as her Pokémon struck Aaron's Spoink; Spoink fainted forcing Aaron to recall it.
"Minun, it's time for the real show." Aaron said throwing his pokeball. "Use shock wave!" Aaron shouted as the Combusken fainted.
"Breloom, come on out." May said throwing her pokeball. "Use mega drain."
"Minun, dodge it and use quick attack!" Aaron shouted as his Pokémon hit the Breloom. "Follow it up with shockwave." Aaron said as the Breloom was barely affected by the attack.
"Camerupt, flamethrower." Aaron heard a voice say as May's Breloom was blasted with fire and fainted. She quickly recalled her Pokémon and ran off. "My admin told me that you wanted to help. You put up a good fight, but you didn't have much of a chance to win." Maxie said as Aaron recalled his Minun.
"I want to join Team Magma." Aaron told him.
"Reason?" Maxie asked.
"Team Aqua caused me trouble, and I want revenge. Also, gyms and contests have never really been my thing." Aaron told him.
"For your efforts, I shall reward you with a position. Come with me to my office so we can fill out some paperwork." Maxie said opening a door and motioning for Aaron to follow him through it.