Hibari

Trixie is a character of the day who appeared in Love, Totodile Style. She and her Pokémon are performers in a Pokémon circus.

Trixie met Ash and his friends while she was out looking for her lost Azumarill. After finding Azumarill, she informed the group that the Aqua Rabbit Pokémon had recently been behaving oddly, even refusing to perform in the circus, which deeply concerned her. She then invited everyone to her next circus performance, but it was interrupted by Ash's Totodile, who had fallen fell in love with Azumarill, who in turn wanted nothing to do with him.

After Team Rocket kidnapped Azumarill and Totodile, Trixie had her Pidgey locate Team Rocket's balloon. During the ensuing confrontation, Ash's Pokémon set the captives free. Azumarill finally expressed her love for Trixie's Golduck, which had been what was responsible for her behavioral change, much to the surprise of everyone.

(Source: Bulbapedia)