<P> Despite Uncle Fester's menacing look and bizarre behavior, he is gentle and caring to everyone . He shows great respect to Gomez and Morticia . He has always exhibited love and great care to his niece and nephews, despite their frequent naughtiness . </P> <P> In the original sitcom of the 1960s, Fester is said to be Morticia's maternal uncle, but in all other filmed and animated content he is Gomez's brother, making him uncle to Wednesday and Pugsley . He is known as "Tío Fétido" in Spain, "Tío Lucas" in Spanish - speaking countries and "Fétide" in France . In Brazil, he has three names: "Tio Chico" (original series and cartoon), "Tio Funéreo" (movies) and "Tio Fester" (Broadway Musical). </P> <P> In the 1960s television series, Fester (played by Jackie Coogan) is uncle to Morticia Addams . In one episode, he became perplexed when asked his last name, suggesting he has somehow forgotten it . In several episodes, Fester refers to the Addams lineage as if it were his own, but the flashbacks in the episodes "Morticia's Romance, Parts 1 and 2," clearly establish him as Morticia's uncle, brother of her mother, Hester Frump, a.k.a. Granny Frump (Margaret Hamilton), whose maiden name was similarly unrevealed . Perhaps, lacking a last name of his own, Fester was all the more dedicated to upholding the honor of another . In various episodes, he was a partner in typical sitcom schemes with Gomez, Morticia, or Grandmama Addams, indicating no real preference for any family member over others . </P> <P> Fester's known ancestry dates back to his Great - Grandfather Blob (not to be confused with Gomez's Cousin Blob, a two - headed ghost), who received the gift of a sacred ruby after he had pried it from the head of a Hindu (whom it was giving a terrible headache). The ruby remained in the family until Fester unthinkingly used his slingshot to hurl it at a yowling stray cat . "Well, it was the only rock in the house!" he said in his defense . </P>

Uncle fester with a lightbulb in his mouth