List of Hiro K.O.'s Amphibia characters

These Are the characters from Hiro K.O.'s Amphibia
=== Main characters ===
* Anne Boonchuy (voiced by Brenda Song as a teenager, Kai Zen as a child) - A 13-year-old Thai-American human girl who originally resided on Earth until a magical chest, known as the Calamity Box, transported her to Amphibia alongside her friends Sasha and Marcy. She is a self-assured and fearless teen with the spirit of an adventurer. Anne is the heart and voice of reason of the three girls. When she first arrives in Frog Valley, she loses her right shoe which is later found by one of the toads of Toad Tower.
* Sprig Plantar (voiced by Justin Felbinger) - A 10-year-old adventurous and curious pink frog who becomes Anne's first true best friend. He is a very adventurous and energetic frog child, both qualities that can bring him to adventure and into trouble respectively. Despite acting carelessly at times, he is utterly loyal to his friends and family, and will ultimately do what is right in the end
* Hopediah "Hop Pop" Plantar (voiced by Bill Farmer) - Sprig and Polly's 68-year-old traditional, strict, and overprotective grandfather and farmer who runs the family farm. He has watched over Sprig and Polly since they lost their parents as revealed in "Hopping Mall."
* Polly Petunia Plantar (voiced by Amanda Leighton) - Sprig's polliwog sister who is an outgoing and fearless tadpole. She loves adventure, monsters, and having fun with her family. Although she is young, she has the heart of an explorer. She has become happy knowing her legs will be arriving within two months.
* Bessie (vocal effects provided by Dee Bradley Baker) - A giant snail who serves as the Plantar family's mode of transportation. It is revealed in “Anne Theft Auto” that Hop Pop won Bessie in a bid to determine who gets to keep her. By season 2, Bessie pulls the Fwagon that the Plantars ride in during their trip to Newtopia.
=== Recurring ===
==== Wartwood inhabitants ====
* Mayor Toadstool (voiced by Stephen Root) - A toad who is the corrupt, rude, greedy, and arrogant mayor of Wartwood Swamp. He has a tendency to raise the taxes on anything. Despite his flaws, he can do something nice and even do the unexpected for the greater good.
** Toadie (voiced by Jack McBrayer) - A small frog who is Mayor Toadstool's loyal assistant.
* Buck Leatherleaf (voiced by James Adomian) - The sheriff of Wartwood who enforces the rules.
* Walliam "One-Eyed Wally" Ribbiton (voiced by James Patrick Stuart) - A local town vagrant with one working eye and half a shoe on one foot who plays a caterpillar-shaped accordion. He comes from a rich family that resides in Ribbitvale but wants to live the life of a vagrant
* Sadie Croaker (voiced by Laila Berzins) - An old lady with a cataract in her left eye. She runs Croaker Dairy where she sells dairy products.
** Archie (vocal effects provided by Dee Bradley Baker) - Sadie's pet spider.
* Felicia Sundew (voiced by Kaitlyn Robrock) - The proprietor of "Felicia's Tea Shoppe" that sells food like tea and dung beetle scones. She is Ivy's mother and Sylvia's daughter.
* Sylvia Sundew (voiced by Mona Marshall) - Felicia's mother, Ivy's grandmother, and Hop Pop's girlfriend.
* Ivy Sundew (voiced by Katie Crown) - Felicia's daughter, Sylvia's granddaughter, and Sprig's childhood friend and eventual crush.
* Leopold Loggle (voiced by Brian Maillard) - An axolotl who is the town's wood-smith and is the proprietor of his woodcraft store. He used to be a metalsmith until an incident where he accidentally impaled his voice box causing him to have speaking issues where he says introducing adverbs and pauses before saying a negative ending word.
* Albus Duckweed (voiced by Kevin McDonald) - A newt who is the local food critic. He also acts as a master of ceremonies at different events.
* Stumpy (voiced by John DiMaggio) - The cook and proprietor of "Stumpy's Diner" with interchangeable prosthetic hands. His restaurant becomes a Thai-Frog fusion restaurant after he learns some Thai recipes from Anne.
* Mr. Flour (voiced by Kevin Michael Richardson) - The baker and proprietor of "Flour & Daughters Bakery."
* Maddie Flour (voiced by Jill Bartlett) - Mr. Flour's eerie yet understanding daughter and Sprig's ex-fiancée who works at "Flour & Daughters Bakery."
* Soggy Joe (voiced by Fred Tatasciore) - A frog survivalist and trucker. He is also the star of the "Wild Amphibia" shorts.
* Tuti (voiced by April Winchell) - The town masseuse and part-time bounty hunter.
* Chuck (voiced by Matt Braly) - A tulip farmer who can also fix houses fast and wears a hat that covers his eyes. He mostly says "I grow tulips."
==== Toad Tower inhabitants ====
* Captain Grime (voiced by Troy Baker) - An evil one-eyed toad who is the former ruler of Toad Tower. He makes Sasha his second-in-command after capturing her to help him seize control of Frog Valley by repressing a potential rebellion from the frogs of Wartwood against him. After this fails and Toad Tower is destroyed, he retreats with Sasha, and most of his army abandons him afterward. He is branded a traitor by Newtopia and becomes a wanted criminal. However, Sasha inspires him to regain his former glory by creating a new army to take over Newtopia. Despite his malevolent nature, he is shown to care about Sasha.
* Sasha Waybright (voiced by Anna Akana) - Anne's and Marcy's former human friend who was captured by Grime and eventually became his new lieutenant after she proved her prowess in battle. She is shown to be the most commanding, rebellious and fiercest of the three girls and was bossy and manipulative towards Anne back home. She was also the one who made Anne steal the Calamity Box that transported the trio to Amphibia in the first place.
* Bog (voiced by Darin De Paul) - A ruthless toad soldier and tax collector who wields a giant hammer. He and the rest of the toad army abandoned Grime after the destruction of Toad Tower.
* Fens (voiced by April Winchell) - An aggressive female toad soldier who fights with a kanabō. She left Grime's army along with the rest after Toad Tower was destroyed.
* Mire - A toad soldier in full body armor who doesn't speak and mostly growls. He left Grime's army after Toad Tower's destruction with the rest of the toad soldiers.
* Percy (voiced by Matt Jones) - A friendly toad soldier who dreams of being a jester. In season 2, he and Braddock are the only toad soldiers left in Grime's army who didn't abandon him.
* Braddock (voiced by Kristen Johnston in Season 1, April Winchell in Season 2) - A friendly female toad soldier who likes to garden and socialize. She and Percy are the only toad soldiers left in Grime's army after the rest deserted him when Toad Tower was destroyed.
==== Newtopia inhabitants ====
* King Andrias Leviathan (voiced by Keith David) - A towering newt who is the king of Amphibia. While appearing to be a jovial and kindly ruler, he seems to be plotting something involving Anne, Sasha, and Marcy.
* Marcy Wu (voiced by Haley Tju) - Sasha's and Anne's other human friend who found the Calamity Box first in a shop on Anne’s birthday who was also teleported to Amphibia. She serves as the brains of the trio, is an expert gamer, and has many clumsy moments which Anne and Sasha have to counter. Upon arrival in Amphibia and being found by the inhabitants of Newtopia, Marcy serves Andrias as his close aide and chief ranger of the Newtopian Night Guard.
* Lady Olivia (voiced by Michelle Dockery) - Andrias's royal advisor. She is often shown to be annoyed when Andrias uses mannerisms that Marcy taught him.
* General Yunnan (voiced by Zehra Fazal) - An aggressive newt with retractable claws in her gauntlets who is Newtopia's skilled warrior and a general of the Newtopian Army. She is so ruthless and bloodthirsty that she disposed of her own army because they were slowing her down. General Yunan has a habit of introducing herself in a very flashy manner by quoting "My name is General Yunan, scourge of the Sand Wars, defeater of Ragnar the Wretched, and the youngest newt to ever achieve the rank of general in the great Newtopian Army!" However, she gets annoyed when people still don't know who she is after doing that.