Rosa is a character appearing in Pokémon Black Version 2 and Pokémon White Version 2 Animated Trailer.
Rosa has brown hair and blue eyes. She wears a pink and white tennis visor instead of a hat and has her hair tied up into two large buns fastened with yellow ribbons and has pigtails hanging down to her waist. She wears a pink tank top tied with a bow around her neck like a halter top under a sky blue and white quarter length top with a fully pink semi-Poké Ball printed on the chest area. Along with the tops she wears frilly flared yellow shorts over opaque black tights with dark pink socks. Her hi-top shoes are sky blue and white with yellow laces. She carries a large pink and white handbag with a black strap over her shoulder.
She is seen as confident and a powerful trainer.
Rosa battled against Cheren and his Stoutland. Rosa used her Serperior and she ordered it to use Hyper Beam and then Slam. Serperior was able to protect itself from Stoutland's Hyper Beam and Rosa stated that they were only just starting.