Main cast •
Timothy Stack as Notchibald "Notch" Johnson – The world's best lifeguard and leader of the Malibu Adjacent SPF 30, who is the best at everything he tries in spite of being old, overweight, and often clueless. He is something of a legend in Malibu Adjacent as several locations are named for him such as the Notch Johnson Home for Orphans and Retards and the Notch Johnson Space Center. •
Jaime Bergman as B.J. Cummings – Lovely young woman who grew up poor in the rural South. Naïve about sex but endlessly cheerful and nice. •
Leila Arcieri as Jamaica St. Croix – Tough lifeguard from the inner-city, shaped when she was abandoned by her parents. •
Kim Oja as Kimberlee Clark – Sweet "girl next door" type assigned to SPF 30 as a spy to bring down Notch Johnson, but ended up a loyal team member who falls in love with him. • Michael Berenson as Lt. Steve Andrews - the English bulldog who was friends with everyone's legs. • Lou Rosenthal as Spank – the
monkey who serves as sort of a mascot for SPF 30. •
Roland Kickinger as Chip Rommel – A German bodybuilder. •
Lisa Banes as Mayor Anita Massengil (2000–2001) – Unpleasant Mayor of Malibu Adjacent who wants Notch Johnson out of the SPF 30 because everyone likes him more than her and he is better than her at everything, and an absentee mother to her flamboyantly gay son Kody. •
Amy Weber as Porcelain Bidet (2002) – An unpleasant but extremely attractive dark-haired gold digger attached to the SPF 30 in Season 3.
Recurring characters • Anthony Wayne Johnson dancer – In the Line of Booty (2002) •
Candace Kita as Asian female news reporter (4 episodes) (2001–2002) • Robert Ryan as Professor Milosovic (13 episodes) (2000–2002) – A wheelchair-using genius scientist who enjoys smutty humor. •
Jason Hopkins as Kody Massengil (12 episodes) (2001–2001) – Mayor Massengill's openly gay son, who has a huge crush on Chip Rommel. •
Lynne Marie Stewart as Ellen (11 episodes) (2000–2002) – The friendly beach lesbian and purveyor of fish tacos from her food truck, who seems able to turn any straight woman into her latest fling. •
Vincent Pastore as Vinnie Fellachio (3 episodes) (2000–2002) – Disgusting mobster who is Jamaica's biological father. ==Episodes==