* Herman Munster (Fred Gwynne): The patriarch of the family, a lovable but clumsy and somewhat dim-witted monster. He's a Frankenstein-like creature with a distinctive gruff voice and a love for tinkering.
* Lily Munster (Yvonne De Carlo): Herman's beautiful and sophisticated wife, a vampire with a love for fashion and a knack for homemaking.
* Grandpa Munster (Al Lewis): Herman's father, a grumpy but lovable vampire with a penchant for longwinded stories and a mischievous streak.
* Eddie Munster (Butch Patrick): The family's mischievous and adventurous son, a werewolf with a fondness for practical jokes and a fascination with science.
* Marilyn Munster (Beverly Owen, later Pat Priest): Herman and Lily's niece, a beautiful young woman who's completely unaware of her family's true nature. She's often the voice of reason and tries to fit in with the "normal" world.
There were also recurring characters like The Count (John Carradine): Grandpa Munster's long-lost cousin and Spot (a dog): the Munsters' pet, a wolf-dog mix.
Let me know if you want to know more about any of these characters!