Prestina was a TV host turned assistant.
Prestina is a Caucasian woman with a perfectly-shaped figure, and has blue eyes and blonde hair.
Furious about her TV show being cancelled, and vowed to shut down the studio so no one else could have a show on there if she couldn't. Though she claimed to her TV show being cancelled was "Show biz, and no hard feelings" as she put it.
She used to have a TV show on for the HBTV, but then it got cancelled and she became an assistant, claiming it wasn't a big deal for her, to which she was actually furious about.
A Pup Named Scooby-Doo
She dressed up as the Ghost of Al Cabone because she didn't want anyone to have a show at HBTV if she couldn't. To throw suspicion off herself, she created identities of Pop O'Conner and the Great Mel and made it look like each was the criminal. However, Velma and Daphne both realized her tricks as they noticed that both of her alternate identities wore the same ring as her. (For Letter or Worse)