Which main character in the US TV sitcom "The Beverly Hillbillies" did not appear in all 274 shows?

"The Beverly Hillbillies" is an American television sitcom that was broadcast on CBS from 1962 to 1971. It had an ensemble cast featuring Buddy Ebsen, Irene Ryan, Donna Douglas, and Max Baer Jr. as the Clampetts, a poor, backwoods family from the hills of the Ozarks, who move to posh Beverly Hills, California, after striking oil on their land.

Although J. D. "Jed" Clampett (portrayed by Buddy Ebsen) has little formal education and is completely naive about the world outside the area where he lives, Jed has a good deal of common sense. Jed was one of the three characters to appear in all 274 episodes of the series, the others being Daisy May Moses (Granny) and Elly May Clampett.

Daisy May Moses (portrayed by Irene Ryan), called "Granny" by all, is Jed's mother-in-law, so is often called "Granny Clampett" in spite of her last name. She has an abrasive personality and is quick to anger, but is often overruled by Jed.

Elly May Clampett (portrayed by Donna Douglas), the only child of Jed and Rose Ellen Clampett, is a mountain beauty with the body of a pin-up girl and the soul of a tomboy.

Jethro Bodine (portrayed by Max Baer Jr. only appeared in 272 episodes) is the son of Jed's cousin, Pearl Bodine (though he addresses Jed as "Uncle Jed"). Pearl's mother and Jed's father were siblings. He drives the Clampett family to their new home in California and stays on with them to further his education.