<Ul> <Li> Molly ( `` The Natural Born Leader '' ) ( voiced by Brianna Gentilella , and Bailey Gambertoglio ( speaking for Seasons 3 - 4 ) ) is a guppy girl with a caring personality . She is a co-host of the show with Gil and is a natural leader of the group . She has long pink hair , brown skin , brown eyes , a swirly bikini top , and a blue swirly tail . Molly appears alongside Gil in the transitional segments , where she aids Gil in hopes that problems wo n't arise . </Li> <Li> Gil ( `` The Turbo - Charged Boy '' ) ( voiced by Zachary Gordon , Jacob Bertrand ( speaking voice ) , Teddy Walsh ( singing voice ) , and Jay Gragnani ) is a guppy boy with a silly personality . He has blue hair , blue eyes , and a green camouflage tail . Gil gets scared easily , and appears alongside Molly in the transitional segments . In those segments , Gil often attempts to do something but with unexpected results . </Li> <Li> Goby ( `` The Make Believer '' ) ( voiced by Jelani Imani , Christopher Borger ( singing for Season 1 ) , Marleik `` Mar Mar '' Walker ( 2013 - 2015 ) , Johntae Limpscomb ( singing for The Puppy and the Ring ! ) , and Isaac Ryan Brown ) is a guppy boy with an imaginative personality . He has indigo hair , brown eyes , and a purple / blue wavy tail . </Li> <Li> Deema ( `` The Drama Queen '' ) ( voiced by Angelina Wahler , Selena Ann Gonzalez ( singing for Season 1 ) and Grace Kaufman ) is a guppy girl with a zany personality . She has orange / yellow curly hair , blue eyes , orange earrings , which she did wear in `` Temple of the Lost Puppy , '' and an orange / yellow spotted bikini top and tail . Deema has a wild imagination and often plays the role of shopkeeper in the `` store '' segments . </Li> <Li> Oona ( `` The Sweetie Pie '' ) ( voiced by Reyna Shaskan and Tori Feinstein ) is a guppy girl with a sweet personality . She has purple hair in two pigtails with a pink star shaped clip , brown eyes , and a purple / pink striped tail . Oona is the only female Bubble Guppy whose tail is attached to her top . </Li> <Li> Nonny ( `` The Neutral One '' ) ( voiced by Eamon Pirruccello , and Jet Jurgensmeyer and Eason Rytter ( singing for `` The Puppy and the Ring ! '' ) ) is an intelligent guppy boy . He has orange hair , green eyes , a blue scuba mask ( his glasses ) , and a green striped tail . Despite not smiling a lot , he is the most polite and mature member of the group . He is smart and helps Deema pronounce words and helps his friends answer their questions . </Li> <Li> Mr. Grouper ( `` The Teacher '' ) ( voiced by Tino Insana ( speaking voice ) , Fred Tatasciore ( speaking for 2013 - 2015 ) and ( Chris Phillips ) ( singing voice ) is the Guppies ' teacher . He is an orange and yellow fish . ( although most of his body is orange ) Mr. Grouper respects the kids ' imaginations , ideas , and suggestions . Oddly , Mr. Grouper can also change his body into different colors like red , yellow , green , blue , purple , pink , lime green , olive green , navy blue , magenta , white , turquoise , brown , white , black , gray , and can be able to return to his normal body color orange . In `` The Crayon Prix , '' Mr. Grouper changed his body color more than once . ( All other episodes , Mr. Grouper changed his body color once ) Whenever Mr. Grouper changes his body color , the Guppies will have almost 100 % of the time a lot of fun with him . </Li> <Li> Little Fish ( `` Their Underwater Guides '' ) ( voiced by Skai Jackson , Mia Vavasseur and Kayla Erickson ) are a trio of fish that look alike and frequently answer questions that are put to the home audience by the main characters . </Li> <Li> Bubble Puppy ( `` Their Rambunctious Pet '' ) ( voiced by Frank Welker ) is Gil 's adopted pet puppy and Gil 's best friend . He has orange and white
who does the voice of mr. grouper on bubble guppies
Tino Insana Fred Tatasciore Chris Phillips