Jennifer Carpenter
Jennifer Leann Carpenter (born December 7, 1979) is an American actress. She is known for playing Debra Morgan, the adoptive sister of the title character of the Showtime series "Dexter", for which she earned a Saturn Award in 2009, and also for playing Rebecca Harris in the CBS television series "Limitless".
Flipper and Lopaka
Dolores - Dexter's sister. Dolores dislikes Dexter, as she thinks of him as very selfish, and she is the only one Dexter truly fears. She occasionally has him babysit her daughter, Inky. She becomes friendly with Flipper and his friends and eventually becomes a famous superstar in Seadom.