This Aggron is a steel/rock-type Pokémon owned by Steven Stone.
Biography[]
Pokémon the Series: Ruby and Sapphire[]
When Team Rocket was to attack Steven and the heroes, Steven sent Aggron, who blasted them off with Hyper Beam, showing off its immense power.[1]
Pokémon Journeys: The Series[]
Aggron reappeared when it was sent out to battle against Ash's Dracovish in the World Coronation Series. It defeated to fossil Pokémon with its Heavy Slam and Smart Strike combination. But when it went up against Ash's Gengar, it got burned by his Will-O-Wisp and was defeated by the Ghost Pokémon.[2]