List of Ni Hao, Kai-Lan characters

Major characters* Kai-Lan (voiced by Jade Lianna Peters) is a playful, adventurous young girl with a big heart.
* Rintoo (voiced by Jack Samson) is a rambunctious and energetic 5-year-old young tiger with a frontal lisp who often acts before he thinks.
* Tolee (voiced by Khamani Griffin) is a gray 5-year-old koala who loves pandas and eating fruit, especially apples, bananas, and pineapples. He is intelligent, sensitive, and always thinks before he acts; however, Tolee often overthinks and worries too much.
* Lulu (voiced by Beverly Duan) is a sweet and intelligent 6-year-old pink rhinoceros. Lulu has a red balloon tied around her horn that helps her fly in the sky.
* Hoho (voiced by Angie Wu) is an energetic white 3-year-old monkey and is the youngest of Kai-Lan's friends.
* YeYe (voiced by Clem Cheung and Ben Wang) is Kai-lan's playful, thoughtful, and caring grandfather.
* At the start of almost every episode, Kai-Lan wakes up Mr. Sun so she can start her day.
* In one corner of Kai-Lan's backyard is a teeming mini-metropolis of ants called Ant City. The ants serve very important roles in the community: they deliver mail, they build things, and they love to play with Kai-Lan and her friends. San-San is their leader along with his two right-hand ants, Bubu and Fufu.
* San-San is voiced by Zachary Gordon, Bubu is voiced by Luke Manriquez, and Fufu is voiced by Kyla Rae Kowalewski.

Minor characters* Howard (voiced by Khamani Griffin) is an owl who first appears in "The Dragonboat Festival." He delivers letters and only speaks in hoots.
* Mr. Fluffy (voiced by Elan Garfias) is a hamster and baker who first appears in "Everybody's Hat Parade."
* Mei Mei (voiced by Laura Marano) is a shy blue polar bear.
* Stompy (voiced by Hsiang Lo) is a big, playful blue elephant who made his first appearance in "Safari Pals." Nothing makes Stompy happier than being able to play with his friends.
* GuNaiNai (voiced by Ming-Na Wen) is Kai-Lan's great-aunt and YeYe's sister. She appears in "Kai-Lan's Trip to China."
* Xiao Xi Gua (meaning "little watermelon") is a baby panda. He appears in "Kai-Lan's Trip to China."
* The Peeking Mice are little, black mice who are often seen playing music. They are voiced by assorted members of the cast.
* The Scotland Rabbits playing tunes on their bagpipes.
* Mr. Hoppy (voiced by Elizabeth Gutmann Daily) is a green frog who speaks in ribbits. In the episode "Kai-Lan's Carnival", he is shown to own a game booth called "Mister Hoppy's Hop-and-Splash" where the player has to throw a ball to sink a lilypad.
* The Monkey King (voiced by Jack Cygan) is a monkey superhero who asked Kai-Lan and her friends for help in a magical kingdom where the foxes and the bears never talk to each other. He appears in "Princess Kai-Lan."
* The Fox King is a fox in The Fox Kingdom. He creates magic bamboo forests to keep the bears away. He usually gets mad, and he could not get his sleep and talk to his friends, because of the dancing bears.
* The Foxes are red foxes that live in The Fox Kingdom. They sing loudly to annoy the Bear Queen. The Fox King's Guards wear Chinese Men's Hats and wear green.
* The Bear Queen (voiced by Lucy Liu) is a bear in The Bear Kingdom. She creates a moat to keep the foxes away. She is usually mad, and she could not get her sleep and talk to her friends, because of the singing foxes.
* The Bears are brown bears that live in The Bear Kingdom. They dance to make the ground shake, thus angering the Fox King. The Bear Queen's guards wear knights' helmets and purple armor.