Tammy (Kirsten Day) is a villain from the series Barbie Dreamhouse Adventures. She is a champion Chinese American girl who is good at everything and who can't stand losing. When Barbie competes with her in a contest, Tammy cheats her way to the top by having her lackey whisper clues to winning through an ear radio and tries to slow Barbie down. Barbie ends up winning anyways, and Tammy just walks off embarrassed. She later returns in Season 2 as a bully at Barbie's new school, still torturing her.
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