text: Sebastian Cabot (voiced by Don Messick) – Alexandra's snickering cat, whose black and white fur resembles Alexandra's hair and whose utterances sound the same as another Messick-voiced character, Muttley, but he also serves as the loyal pet sidekick of the group (in one episode he uses his sense of smell to track the rest of the group like a dog). He enjoys being mean and sometimes appears to go to the enemy's side, but usually only to trick the villain so he can have a chance to help the group escape. He sometimes uses his claws to pick locks. Alexandra sometimes recruits Sebastian to pull dirty tricks on Josie, but even these tricks usually backfire. Sebastian occasionally "breaks the fourth wall" and snickers to the audience. In The New Scooby-Doo Movies crossover episode "The Haunted Showboat", Messick voiced both Sebastian and Scooby-Doo at the same time. Sebastian's odd nature is a holdover from the comic book where he was a witch's familiar, possessed by the mind of a powerful warlock ancestor of Alexandra. He has the same name as a 20th-century character actor and a 15th-16th century naval explorer.
  Bleep (voiced by Don Messick) – Bleep appears only in Josie and the Pussycats in Outer Space. He is Melody's blue fluffy pet alien with pink extremities and makes a "bleep" sound (thus his name) which only Melody can understand. Bleep can also generate invisible sound waves from his mouth and eyes.
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