The official website for Pokémon Omega Ruby and Alpha Sapphire has shared further details on key members of Team Magma and Team Aqua. You can find information on the Team Aqua characters below, along with the relevant screenshots. Team Magma information can be found here.
Team Aqua Leader Archie:
Archie is the leader of Team Aqua, a man with an unwavering heart who seeks to build an ideal home for Pokémon. His big-hearted and stirring personality has won him deep loyalty from his subordinates. But he is also a dangerous figure, not caring what happens to himself or his team as long as he can achieve his goals. Archie is a Mega Evolution user and he wears the Mega Anchor, set with a mysterious Key Stone, needed to Mega Evolve his Pokémon.
Team Aqua Admin Shelly:
Shelly could be described as the brains of Team Aqua. Her style and her attitude may both seem extreme, but her intelligence, her blunt personality, and her dynamism have won her many fans among the members of Team Aqua.
Team Aqua Admin Matt:
Matt’s huge body, like that of a wrestler, holds a powerful will. He owes a debt to Archie, who once saved him, and he is loyal to his savior to the very depths of his heart. He has adopted Archie’s ideals as his own, and he is ready to sacrifice his own life if it would help to make them a reality.
Mega Sharpedo (Used by Archie):