Tammi is talented, pretty, and competitive. She is focused on winning the show choir competition finals. Sometimes to the point where she uses other people to win.
She is a bit selfish, as she stole Spectacular's only male singer for the show choir finals. She is also hostile towards Spectacular's crew.
Before joining Ta-DaEdit
It is hinted that she was a member of Spectacular! because the amount of times Courtney called her a backstabber. It is not revealed what happened, but it is most likely she quit after some arguments with Courtney.
Courtney states that the letter I in her name states the ice in her veins."