Flintstones characters are hidden behind the doors.
About the characters:
Fred Flintstone is the main character of the series. Fred is an accident-prone bronto-crane operator at the Slate Rock and Gravel Company and the head of the Flintstone clan. He is quick to anger, but is a very loving husband and father. He is also good at bowling and is a member of the fictional "Loyal Order of Water Buffaloes", a men-only club paralleling real-life fraternities such as the Loyal Order of Moose.
Wilma Flintstone is Fred's wife. She is more intelligent and level-headed than her husband, though she often has a habit of spending money. She often is a foil to Fred's poor behavior.
Pebbles Flintstone is The Flintstones' infant daughter, who is born near the end of the third season.
Dino, a sauropod dinosaur, is the Flintstone's pet who barks and generally acts like a dog. A running gag in the series involves Dino knocking down Fred out of excitement and licking him repeatedly. Though this irritates Fred a lot, he generally likes Dino very much.
Baby Puss is the Flintstones' pet saber-toothed cat, who is rarely seen in the actual series, but is always seen throwing Fred out of the house during the end credits, causing Fred to pound repeatedly on the front door and yell "Wilma!"