Debbie Dooley
Tina Bellows
Mimi the Maid
Alan Corwin
Fifo

Also:
Commando Jack 'Hammer' Patton, Alan's former Drill Instructor

The Main Antagonists:
Cathra the Cat the seductive private detective, former Russian cat burglar
Andrea Conartist the cocky cat burglar, embezzler
Fly-By-Nite
Suddzor
Boatar
Witch Hazel
Karen Daly & Harry Higgins
Exterminator
Bo Constrictor
Will E. Weasel