1. Lisa Douglas on Green Acres

Eva Gabor’s Lisa Douglas was the glamorous New York socialite who never quite got used to farm life. She brought a unique charm to Green Acres, mixing couture fashion with slapstick comedy. Viewers loved the way she clashed with her practical husband Oliver while trying to milk cows in heels or cook “hotscakes.” For a while, Lisa was a fan favorite and gave the show its zany edge.
But after the series ended in 1971, Lisa seemed to vanish from the cultural conversation. Unlike Lucy Ricardo or Samantha Stephens, she didn’t get reruns that kept her character alive daily. Today, Lisa feels like one of those unforgettable yet strangely forgotten sitcom wives. Fans who revisit the series are reminded of just how much she carried the comedy.
2. Adam Cartwright on Bonanza

Adam Cartwright, played by Pernell Roberts, was the intellectual and brooding son on Bonanza. While Little Joe was the heartthrob and Hoss was the gentle giant, Adam provided the voice of reason. His character was educated, thoughtful, and often brought a more serious tone to the family’s adventures.
But Roberts left the show in 1965, tired of playing the same role without much growth. After his departure, Adam was written off with a vague backstory about heading east. Unlike his brothers, he wasn’t constantly revisited in later storylines. For many viewers, it felt like he disappeared almost overnight.
3. Jeannie on I Dream of Jeannie

Barbara Eden’s Jeannie might have been the most iconic bottle-dweller of the ’60s. She was whimsical, mischievous, and always at odds with the rules of the mortal world. Her romance with Major Nelson kept audiences hooked, and her bubbly personality made her unforgettable.
But once the series wrapped in 1970, Jeannie’s magic faded quickly from prime-time schedules. While reruns existed, she didn’t maintain the same constant rotation that Bewitched enjoyed. For younger viewers, she became more of a trivia answer than a household name. Still, for those who grew up with her, Jeannie remains that unforgettable yet vanished character.
4. Barney Fife on The Andy Griffith Show

Don Knotts’ Barney Fife was one of the funniest characters of the entire decade. His bumbling ways, nervous energy, and constant overreactions were the heart of Mayberry’s charm. He made audiences laugh without even trying, thanks to his timing and delivery.
Yet Barney left the series in 1965, and his absence was sorely felt. Though he made a few guest returns, the town of Mayberry moved on without him. Unlike Andy Taylor, who lived on through reruns, Barney didn’t quite have the same staying power in the public’s memory. For older fans, though, Barney Fife will always be unforgettable, even if he vanished too soon.
5. Agent 99 on Get Smart

Barbara Feldon’s Agent 99 was smart, stylish, and often the real hero of Get Smart. While Maxwell Smart bumbled his way through missions, 99 was the brains behind the duo. She balanced charm with competence in a way that made her stand out in a sea of male-centric comedies.
But after the show ended in 1970, Agent 99 slipped into the shadows of TV history. She didn’t carry over to spinoffs or gain the rerun attention of other female leads of the era. Younger audiences often forget she even existed, despite how crucial she was to the series. Agent 99 remains one of the decade’s unsung gems.
6. Ann Marie on That Girl

Marlo Thomas’ Ann Marie was a breakthrough character, portraying a single woman chasing her acting dreams in New York City. She was stylish, independent, and aspirational for a generation of women. Ann Marie showed that a female lead could be funny, charming, and career-focused all at once.
Yet when That Girl ended in 1971, her character didn’t stick around in pop culture. Unlike Mary Richards a few years later, Ann Marie didn’t benefit from constant reruns or a cultural revival. She became one of those names older viewers fondly recall but younger ones may never have heard of. That vanishing act feels unfair, considering how influential she was in paving the way for future female leads.
7. Napoleon Solo on The Man from U.N.C.L.E.

Robert Vaughn’s Napoleon Solo was suave, clever, and one half of a spy duo that rivaled James Bond. The show was hugely popular in the mid-’60s, and Solo’s adventures with Illya Kuryakin felt cutting-edge at the time. Fans loved the mix of Cold War intrigue and stylish espionage.
But by the end of the decade, the spy craze fizzled, and Solo’s name went with it. Unlike Bond, he didn’t get movies, reboots, or even steady reruns to keep him alive. His co-star Illya had more staying power thanks to David McCallum’s later fame on NCIS. Napoleon Solo, though unforgettable in the moment, seemed to vanish almost immediately after the series ended.
8. Samantha Stephens on Bewitched

Elizabeth Montgomery’s Samantha Stephens was one of the most beloved characters of the decade. Her twitching nose and balancing act between suburban life and witchcraft captivated audiences. She was witty, warm, and endlessly patient with Darrin’s demands.
Yet, strangely, after the show wrapped in 1972, Samantha didn’t carry the same nostalgic weight as some contemporaries. While Bewitched still airs in reruns, Samantha herself doesn’t get talked about as much as Lucy or Mary Richards. Her cultural imprint is strong but oddly faded in conversations about TV history. Samantha was unforgettable in her day, but her presence has slowly vanished over time.
9. Hogan on Hogan’s Heroes

Bob Crane’s Colonel Hogan was the clever mastermind behind every scheme on Hogan’s Heroes. He was charismatic, quick-witted, and always three steps ahead of the bumbling Germans. Viewers tuned in each week to see him outsmart the enemy with charm and ease.
But after the series ended in 1971, Hogan’s character quickly lost his place in TV nostalgia. Part of this may be due to the darker turn in Bob Crane’s real life, which overshadowed the character. Unlike other sitcom leads, Hogan didn’t stay in syndication rotation as strongly. He’s a character older fans remember fondly but younger audiences may have never seen.
10. Ed Brown on Chico and the Man

Jack Albertson’s Ed Brown was the gruff but lovable garage owner in Chico and the Man. His unlikely partnership with Chico brought heart and humor to the series. Viewers were touched by the way his character softened over time, turning from cranky to caring.
But after the show ended, Ed Brown faded into the background of TV history. Unlike Archie Bunker or George Jefferson, he didn’t stick around as a cultural talking point. His role was unique, yet it didn’t get revisited or revived in reruns as often. Many remember Freddie Prinze’s Chico but forget Albertson’s equally important Ed.
11. Endora on Bewitched

Agnes Moorehead’s Endora was the ultimate meddling mother-in-law. With her flamboyant style, sarcastic wit, and constant disdain for Darrin, she stole every scene she was in. Endora became one of the decade’s most recognizable TV characters.
But after Bewitched ended, her role didn’t stay in the spotlight. She was unforgettable for her sass and larger-than-life presence, yet she vanished from rerun fame. Unlike Samantha, who remained the face of the show, Endora became a side note. Still, anyone who watched Bewitched during its run remembers her vividly.
12. Dr. Richard Kimble on The Fugitive

David Janssen’s Dr. Richard Kimble was the desperate man on the run, falsely accused of murdering his wife. Week after week, viewers followed his journey, rooting for him to clear his name. The series was gripping, and its finale in 1967 was one of the most-watched of the decade.
But once the story was resolved, Kimble’s character disappeared into TV history. Unlike other detectives or crime fighters, he didn’t live on in reruns as much. He was unforgettable during the show’s peak, yet his character didn’t have staying power. Kimble is the perfect example of unforgettable in the moment but vanished in the long run.