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Bubble Guppies is a CGI children's television series produced for Nickelodeon and created by Jonny Belt and Robert Scull. The series is a combination of the sketch comedy, edutainment, and musical genres, and revolves around the underwater adventures of a group of merperson preschoolers named Molly, Gil, Goby, Deema, Oona, Nonny, and Zooli. The program premiered on Nickelodeon on January 24, 2011, and originally ran for four seasons until its conclusion on October 21, 2016. The series is produced using 3D software.

Almost three years after the last episode of its original run, it was revived for a fifth season on June 4, 2019 with an order of 26 episodes. The fifth season premiered on September 27, 2019. On February 19, 2020, the show was renewed for a sixth season, which premiered on October 19, 2021.


  • Molly is a bubbly human guppy girl. She is the host of the show and her best friend is Gil. Molly appears alongside Gil in the transitional segments, where she aids Gil in hopes that problems won't arise. Brianna Gentilella provides her singing voice in all seasons and her speaking voice in seasons 1–2 and 6. Her speaking voice is provided by Bailey Gambertoglio in seasons 3–4 and Taylor Kaplan in season 5.
  • Gil is a silly human guppy boy. He is Molly's co-host and best friend. Gil gets scared easily, and appears alongside Molly in the transitional segments. In those segments, he often attempts to do something but with unexpected results. He is voiced by Zachary Gordon in season 1–season 2 episode 2, Jacob Bertrand in season 2 episode 3–season 3, Jay Gragnani in season 4, and Quinn Breslin in seasons 5–6. His singing voice is provided by Teddy Walsh in season 2 episode 4–season 3.
  • Goby is a human guppy boy with an imaginative personality. He is voiced by Jelani Imani in seasons 1–2, Marleik "Mar Mar" Walker in season 3, Issac Ryan Brown in season 4, Caleb Clark in season 5 episodes 1–24 and Josiah Gaffney in season 5 episode 25–season 6. He is also good friends with Gil. His singing voice is provided by Christopher Borger in season 1 and Johntae Limpscomb in seasons 3–4.
  • Deema is a human guppy girl with a wild imagination and often plays the role of shopkeeper in the "store" segments. She is voiced by Angelina Wahler in seasons 1–2, Grace Kaufman in seasons 3–4, Catherine Bradley in season 5 and Zoe Glick in season 6. Her singing voice is provided by Selena Gonzalez in season 1.
  • Oona is a human guppy girl with a sweet personality. She is voiced by Reyna Shaskan in seasons 1–2, Tori Feinstein in seasons 3–4, Colby Kipnes in seasons 5–6, and Mia Lynn Bangunan from season 6 episode 15.
  • Nonny is a human guppy boy with an intelligent personality. Despite not smiling a lot, he is the most polite and mature member of the group. He is also Oona's best friend. He is smart and helps Deema pronounce words and helps his friends answer their questions. He is voiced by Eamon Pirruccello in seasons 1–2, Jet Jurgensmeyer in seasons 3–4, and AJ Kane in seasons 5–6. His singing voice is provided by Eason Rytter in season 3.
  • Zooli is a human guppy girl introduced in season 5. She is an animal expert. She is voiced by Leah Janvier.
  • Bubble Puppy is Gil's pet puppy and best friend. He has orange and white fur and a green collar with a yellow fish license. He is voiced by Frank Welker.
  • Mr. Grouper is the guppies' teacher. Mr. Grouper respects the kids' imaginations, ideas, and suggestions. He can also change his skin into different colors. He is voiced by Tino Insana from 2011 to 2016 and Fred Tatasciore since 2014. His singing voice is provided by Chris Phillips.
  • The Little Fish are a group of small goldfish who appear throughout each episode as guides for the viewers. They announce the episode's name and shout out the answers to viewer-response questions, as well as provide commentary in some scenes. They are voiced by Skai Jackson in seasons 1–2, Mia Vavasseur in season 3, Kayla Erickson in season 4, and Jordan Friedman in seasons 5–6.