Saitou

Bea is the Gym Leader of Stow-on-Side's Gym, known officially as Stow-on-Side Stadium. She specializes in Fighting-type Pokémon. She gives the Fighting Badge to Trainers who defeat her.

Bea has a strong personality and she hates to lose. She's also willing to drive herself to the extreme to improve herself and her Pokémon, but isn't above admitting she's gone too far if that happens. She has also displayed a soft spot for sweets.

(Source: Bulbapedia)