Fred Flintstone is the caveman who thawed out of the ice. He appears for the first time.
Fred Flintstone is also one of the main characters from The Flintstones.
Fred has the same design as the one from his original show.
Grape Ape's first appearence.
Billy names Fred Flintstone, Jake Steel.
For almost everytime Fred moves, there's a Hanna-Barbera sound effect.
The only time Fred speaks English is when he says his name, Fred.
The principal lives in his own car.
Credits: Barney Rubble is visted by Billy in the Stone Age. Billy makes noises that are funny at Barney and then Barney makes a joke about the modern ages and comments about Billy.
Pud'n Mentions Captain Deadwood from Billy Ocean
Mandy: (reading the letter) P. S. S. S. I like applesauce.
Mindy: (at Fred Flintstone) He smells like yabba-dabba-doo-doo!
Billy: Did the ocean get warmer all of a sudden, or is it just me?
Giant Billy and Mandy All-Out Attack:
The title is a parody of a Godzilla movie called Giant Monsters: All-Out Attack.
Kittyra is a parody of King Ghidorah.