There are obviously spoilers ahead for several TV shows.

2.In the pilot ofThe Golden Girls, Charles Levin starred as Coco, the ladies' housekeeper.

However, hedisappearedafter the first episode.

Tom Ellis as Robin Hood vs Sam Maguire as Robin Hood in Once Upon a Time

3.For the first two seasons ofBridgerton, Francesca Bridgerton was played by Ruby Stokes.

However, when the show was picked up, Audra McDonald assumed the role in Season 1.

5.Keahu Kahuanui played Danny onTeen Wolffor the first three seasons.

Coco asking Sophia if she wants tea and her saying she would prefer gin and a beer back

6.Xochitl Gomez portrayed Dawn Schafer inThe Baby-Sitters ClubSeason 1.

Then, Kyndra Sanchez assumed the role for the show’s second and final season.

Xochitlstepped awayfrom the role so that star inDoctor Strange in the Multiverse of Madness.

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7.Jake T. Austin notably starred as Jesus Adams Foster in the first two seasons ofThe Fosters.

However, he left the show after Season 2 and was replaced by Noah Centineo.

Rossexplainedhe decided to leaveRiverdalein order to focus on having a bigger role on13 Reasons Why.

Ruby Stokes as Francesca Bridgerton vs Hannah Dodd as Francesca in Bridgerton

This led to the youngest Winslow daughter, Judy, disappearing one day as if she never existed.

People often joke that Judy went upstairs one day, and never returned.

However, when Season 2 began, Mandy was gone.

Merrin Dungey as Naomi vs Audra McDonald as Naomi in Private Practice

12.InRoseanneSeason 6, Jackie gives birth to her son Andy.

He became an important member of the team but was never seen again after Season 2.

At the time, Edsaid, “My plan was to stay withGame of Thronesfor the long haul.

Danny in Teen Wolf

That was always my plan.

I would have loved to.

It was a wonderful experience, but politics led to us parting ways.”

Xochitl Gomez as Dawn vs Kyndra Sanchez as Dawn in The Baby-Sitters Club

After the first episode, she’s never seen again.

Jake T Austin as Jesus in The Fosters vs Noah Centineo as Jesus and his family remarking on how tall he's gotten

Ross Butler as Reggie in Riverdale vs Charles Melton as Reggie

Judy in Family Matters

Janet Hubert as Aunt Viv in Season 1 vs. Daphne Maxwell Reid as Aunt Viv in Season 4

Mandy in The West Wing

A scene from Roseanne with Andy, Darlene, and Jackie

Santiago telling Buddy that he will do anything he asks and he won't mess up

Ed Skrein as Daario vs Michiel Huisman as Daario in Game of Thrones

Terry remarking that Scully, Hitchcock, and Daniels are "pretty much worthless but they make good coffee"