What are some shows where in the first season a character was played by one person, but from the second season on they were played by someone else?

For example: Nicole Paggi played Sydney Shanowski on Hope & Faith in season one, and then Megan Fox played Sydney in seasons two and three.

The Munsters: Beverly Owen played Marilyn for the first 15 episodes during the first season and Pat Priest took over from there.

On Petticoat Junction Jeannine Riley played Billie Jo for the first 2 seasons. Gunilla Hutton played Billie Jo in season three. Meredith MacRae played Billie Jo from season four on. Also Pat Woodell played Bobbie Jo in the first two seasons and Lori Saunders played Bobbie Jo from season three on.

Bewitched-Irene Vernon played Louise Tate for the first two seasons then Kasey Rogers took over the role for the remainder of the show. Likewise Alice pearce played neighbor Gladys Kravitz for the first two seasons, then was replaced by Sandra Gould who took over the role of Gladys Kravitz.

'Happy Days' - Chuck was played by Gavin O'Herlihy in season 1 and by Randolph Roberts in season 2.

'Gimme A Break' - Grandma Mildred Kanisky was played by Elizabeth Kerr and Elvia Allman in season 1, Jane Dulo played the role in season 2.

'Petticoat Junction' - Selma Plout was played by Virginia Sale in season 2 and Elvia Allman for the remainder of the show. Henrietta Plout was played by Susan Walther in season 3 and by Lynette Winter for the remainder of the show.

'Green Acres' - Doris Ziffel was played by Barbara Pepper from seasons 1-4, Fran Ryan replaced her for season 5-6.

Parker Lewis Can't Lose - Annie Bloom played Parker's mom Judy Lewis during the first season. She was replaced by Mary Ellen Trainor in the second season.

The Partridge Family switched out Jeremy Gelbwaks and switched IN Brian Foster as Chris Partridge. :)

Joan Pringle replaced Lynne Moody as Tracy Curtis on That's My Mama! in S2.

I meant characters who were played by a different actor in season ONE only guys, then someone else for the rest of the series. Not someone in the first 2 seasons or more, just the very first season of the show and was played by someone else starting in season two. Sorry if I wasn't clear enough before. :)

In season one of Family Guy Lacey Chabert was the voice of Meg Griffin. From season two onward Mila Kunis was the voice of Meg.

Meg Foster was the original Christine Cagney during the short 6-episode 1st season. She was axed and replaced by Sharon Gless for the rest of Cagney & Lacey's run.

Matt McCoy played David Tucker during the 1st Season of We Got It Made. NBC canceled the show after only 1 season, but the show came back 3 years later in syndication, and John Hillner took over the role of David Tucker.

Throb - Jeremy Beatty character was played by Paul Walker in Season 1, and was replaced by Sean de Veritch in Season 2.

Chad Lowe played the title role in the short lived 80's sitcom "Spencer" but quit over a contract dispute after 5 episodes to be replaced by Rossie Harris.

On The A-Team Tim Dunigan was the original "Face" only to be replaced after the series 2-hour pilot by Dirk Benedict, the reasoning was that the main characters were Vietnam vets and Dunigan was deemed too young as "Face" would barely be out of high school when the war ended.

Elaine Heilveil played Nancy Lawrence for the first 6 episodes of Family when it aired as a spring tryout. When it came back in the fall, they replaced her with the more glamorous Meredith Baxter-Birney.

Bewitched-Irene Vernon played Louise Tate for the first two seasons then Kasey Rogers took over the role for the remainder of the show. Likewise Alice pearce played neighbor Gladys Kravitz for the first two seasons, then was replaced by Sandra Gould who took over the role of Gladys Kravitz.
and of course, there's the "great Darrin switch":lol:

After season one of New Girl, Damon Wayans Jr was replaced by another black guy, whose character was named Winston..

My Wife and Kids- Claire was played by Jazz Raycole in Season 1 and was replaced by Jennifer Freeman in Season 2

A show that's on now. Last Man Standing, Alexandra Krosny replaced by Amanda Fuller.

On Trophy Wife they changed the actress for Hilary after the Pilot episode from Gina Le Pera to Bailee Madison.