Television writers rarely get everything right in the room. Storylines shift, actors surprise everyone, and audiences decide for themselves who they actually care about. Sometimes a character written as a placeholder, a punchline, or a one-episode threat ends up becoming the reason people keep watching. These five cases are among the most dramatic in TV history. Each started small, even disposable, and each eventually reshaped the show around themselves.
1. Spike – Buffy the Vampire Slayer
The punk-rock vampire made his first appearance in “School Hard,” the third episode of Season 2. He was planned to be a short-term antagonist, posing a threat to Buffy and her friends before being dispatched to make room for a bigger villain. The scene where he’s crushed by rubble in “What’s My Line? Part 2” was originally conceived as his death scene, but his immense popularity kept him alive.
During the second season of the series, Spike comes to Sunnydale hoping to kill a third Slayer, Buffy Summers, with whom he later forges an uneasy alliance. Over the course of Buffy, Spike falls in love with the Slayer, reacquires his soul to prove himself to Buffy and dies a hero in the show’s series finale. He served as the villain for early Season 2 and was planned to die, but his popularity saved him. He showed up in one episode in Season 3 before returning for good in Season 4. Spike became a major character and fan favorite, extending his time on the series thanks to the way he connected with fans. Thanks in part to great writing and an amazing performance by James Marsters, viewers couldn’t help but enjoy Spike, even when he was being bad.
2. Jesse Pinkman – Breaking Bad
Series creator Vince Gilligan originally intended for Jesse Pinkman’s character to be killed at the end of Breaking Bad’s first season. Gilligan wanted Jesse to die in a botched drug deal, as a plot device to plague Walt with guilt. Jesse’s death was meant to take place in episode nine, but due to the 2007-08 Writers Strike, the season was shortened to seven episodes, though Gilligan admitted that by the second episode he realized that Paul was too good to get rid of so quickly.
Despite initial plans to kill off the character at the end of the first season, Paul’s performance convinced the showrunner and head writer Vince Gilligan to keep Jesse in the show. The character has been said to become the “flawed moral center” to Walter White in later seasons. Jesse is the only character besides Walter to appear in every episode of the show. Paul reprised the role in 2019 as the protagonist of the spin-off sequel film El Camino: A Breaking Bad Movie, set after its finale, and again in 2022 for the sixth and final season of the spin-off prequel sequel series Better Call Saul. Killing off Jesse would not only have robbed us of Paul’s three-time Emmy-winning performance, but of the complex evolution of the endearingly tragic character who became the heart of Breaking Bad.
3. Steve Urkel – Family Matters
Midway through the first season, the show introduced the Winslows’ nerdy neighbor Steve Urkel, played by Jaleel White, originally as a one-time appearance. But then Steve Urkel stole the episode, compelling the showrunner to rewrite scripts and accommodate him for more screen time. Not long after, the character became the focus of the series.
While initially intended to be a minor character, Urkel became very popular with audiences for his oddball antics, and became a recurring character. Steve joined the main cast beginning with the season-two premiere “Rachel’s Place.” Steve Urkel’s commanding presence improved Family Matters ratings, rescuing the family sitcom from cancellation. The character’s impact extended beyond the sitcom, etching an indelible mark on pop culture and White’s decades-long career. As the show progressed, episodes began to center increasingly on Steve Urkel, and other original characters also played by White, including Steve’s suave alter-ego, Stefan Urquelle.
4. Daryl Dixon – The Walking Dead
The character was not originally in the comic book series of the same name, but was created specifically for Reedus after his audition for the character of Merle Dixon. Daryl was planned to only stick around for a couple of episodes, at best, before being taken out unceremoniously by a zombie, but the cast, crew, and most importantly the fans loved Daryl’s character so much that Reedus kept being asked to return by popular demand. In due time, he became an official part of the cast.
Daryl was originally a recurring character but was upgraded to the main cast in season two. Initially a member of the recurring cast, Reedus was upgraded to series regular after the first season. Following Andrew Lincoln’s departure as Rick in the ninth season, Reedus got top billing and took over as the series’ main protagonist. Regarded as one of the series’ most popular characters, he currently stars as Dixon in the spin-off series The Walking Dead: Daryl Dixon. Daryl has the highest number of appearances of any other character in the show, appearing in a total of 148 episodes.
5. Frasier Crane – Cheers
Kelsey Grammer, along with fellow recurring actor John Ratzenberger, were hired for seven episodes, to play Frasier Crane and Cliff Clavin respectively. Cliff was scheduled to recur during the 1982–1983 season, Frasier to recur during the 1984–1985 season. The role of Frasier was conceived as a short-term foil for Sam Malone, the kind of pompous intellectual that would generate friction and then disappear. What nobody quite predicted was how fully Kelsey Grammer would inhabit the character.
Both actors were subsequently upgraded to the main cast, and Crane continued in his own series following the end of Cheers. In other cases, recurring characters have been given spin-off series of their own, such as Dr. Frasier Crane who originally was a recurring character on Cheers. The Frasier spin-off ran for eleven seasons and became one of the most decorated sitcoms in Emmy history, a run that would have been impossible had the writers not noticed something special during those original seven contracted episodes. Recurring characters sometimes start out as guest stars in one episode, who then reappear in future episodes because creators or audiences found the actors or storylines compelling enough to revisit. Sometimes a recurring character eventually becomes part of the main cast of characters; such a character is sometimes called a breakout character.
What each of these stories shares is a moment where the plans stopped mattering. A performance lands, an audience responds, and suddenly the writers are chasing something they didn’t expect. The five characters above prove that the most defining figures in TV history weren’t always the ones anyone had in mind from the start.
