Rachael Lillis began her voice acting career in the 1990s, quickly becoming a staple in the animation industry. She first lent her voice to Misty, the water-type Pokémon gym leader, in the original Pokémon anime series that debuted in 1998. Misty, alongside Ash, Pikachu, and Brock, became one of the most recognizable characters in the Pokémon universe.