Shelly

Shelly is one of the three Aqua Admins in Team Aqua.

Personality
Shelly is a bit passive aggressive and is very easily annoyed. She isn't the best to deal with problems head on bit she can take them from behind like a champion.

Ruby, Sapphire & Emerald
In Sapphire and Emerald she appears first at the weather institute and then at the Seafloor Cavern. In your first battle against her, she has a Carvanha and a Mightyena. At the Seafloor Cavern the only change is that her Carvanha has evolved into Sharpedo. Shelly doesn't appear in Pokémon Ruby.

Main Series
In the anime, Shelly has a Carvanha but instead of a Mightyena she has a Walrein and a Crawdaunt, but she is a scuba diver.

S
First Battle=

Second Battle=

E
First Battle=

Second Battle (May be with an Aqua Grunt)=

OR/AS
First Battle (With an Aqua Grunt)=

Second Battle=

Third Battle=

Trivia

 * The only time Shelly didn't wear her bandana was in "The Three Team Scheme."
 * Both Courtney and Shelly start with "Ahahahaha!" in the beginning of their conversation with the player before the battle.
 * The length of her top seems to differ between the games and the anime: in the anime it is a sleeveless shirt, but in the games it is a bikini.
 * In her debut appearance in the anime, she was referred to as 'Isabel', while her Chuang Yi name in Pokemon Adventures was 'Angie', giving her three total names across the Pokemon media.  'Isabel' became her actual name in all subsequent anime appearances; she remained 'Angie' throughout the RS arc of Pokemon Adventures in Chuang Yi's version.  This same thing happens to Tabitha.
 * Her Generation III appearance has her depicted with curly red hair, but her Generation VI re-design gives her black hair with some blue accents.