•
Noah – the series' main protagonist. Noah is a male polar bear who discovers the floating island whilst adrift on an ice floe in the North Atlantic Ocean, and is eventually elected as the island's captain because of his strong leadership skills. He is eccentric yet ambitious, and his main goal in life is to turn the floating island into a safe haven for all animals. •
Mammothsbody and Salomi – two elderly
woolly mammoths who were frozen in Arctic ice during the ice age, but are thawed out by the heat of the meteorite forming the Fire-Bowl. Mammothsbody is slow and simple-minded, while Salomi is more strong-willed, shrewd and aggressive. A recurring joke in the first series is Mammothsbody constantly proposing marriage to Salomi, but she always rejects him. The mammoths eventually marry at the end of the first series, but Salomi continues to talk down to Mammothsbody despite their marriage. •
Sparky – a male white rabbit who never speaks, communicating instead through hand gestures and facial expressions. His small size and lack of strength are often played for comedic effect, and a recurring joke throughout the series is a larger animal falling down and accidentally "crushing" him. •
The Vulture Patrol – a flock of
vultures who serve as airborne scouts, often sent to investigate an island or coastline Noah's island approaches. The original group consisted of an elderly, senile vulture named The Squadron Leader, and his two daughters Shirley and Mildred. They are later joined by "Him", a male vulture who is handsome and strong, yet dim-witted. "Him" and Shirley eventually become mates and have a chick together, who is referred to as "Baby Chick Bird".
Zoo animals •
Rocco – a brash but virtuous male gorilla who serves as the island's "Chief Surgeon", having acquired basic medical knowledge from observing the zoo's vets. Rocco's main character arc in the series is grieving for his mate Hetty, who died when the cargo ship sank, but eventually starting a relationship with another gorilla named Gertie. •
Woomera – a female
red kangaroo who works with Rocco in the island's infirmary. While often caring and kind-hearted, she is prone to stubbornness in difficult situations, and regularly argues with the more reckless Rocco. •
Nab – an anxious but well-meaning male
orangutan who speaks in a stereotypical Scottish accent and watches over the island's Fire-Bowl (the core of molten magma that causes the island to float), referring to himself as the "Chief Engineer". •
Jasper – a male
proboscis monkey who assists Nab in the Fire-Bowl chamber. Like Sparky, Jasper never speaks, communicating instead through monkey sounds that are translated by whoever he is speaking to. Despite being a proboscis monkey, Jasper is always referred to as a "gibbon" by other characters. •
The Valve Rhino – a simple-minded male rhinoceros who works with Nab and Jasper in the Fire-Bowl chamber, using his great strength to push the Fire-Bowl's valve systems. Despite usually being calm and non-confrontational, the rhino is prone to outbursts of violent anger when others voice their annoyance with his habit to say 'Pom-pom-pom-piddle-pom-pom'. •
Reg – an arrogant male
mandrill who longs to be human, often trying to do "human" things such as walking on two legs and reading books, though he is illiterate and can only look at the pictures. He is good friends with Rocco, but never shows much consideration towards anyone else, and regards himself as superior to the other animals for being "almost human". Early in the first series, Reg is portrayed as a rogue, but as the series progresses he becomes more of a
comic relief character. •
Ursula – a female
Eurasian brown bear who speaks in a stereotypical Welsh accent. She is a self-centred gossip, and shows little to no regard towards others. However, despite being a different species of bear she has romantic feelings for Noah. •
Chang – a soft-spoken and timid female
giant panda. She is close friends with Ursula and is usually by her side, but they frequently argue about trivial things and rarely agree on anything. Chang also knows how to perform
hypnosis to sedate Rocco's patients, but she lacks true skill and often fails to hypnotise someone properly. •
The Problem Walrus – a laid-back male
walrus who spends much of his time lounging on the island's beach, but also offers a counselling service, listening to the personal problems of other characters and offering philosophical guidance and advice. •
Tabby and Ena – a pair of female
hyenas who act as Reg's bodyguards. During the first series, both give birth to one mischievous pup each, which are the first babies to be born on the floating island. However, the father of the pups drowned when the cargo ship sank, and never appears in the series. •
Carmen – an awkward female
aardvark who is very sensitive about her long nose and tongue. She can be very aggressive, but she is usually mannered and well-tempered. •
Agatha – a female giraffe who is something of a snob, looking down on the other animals in more ways than one. Though she is snooty, she always assist with whatever events require skills unique to a giraffe, so overall she's ill-tempered, but still cares.
Rescued animals •
Sacha – a friendly male
Russian desman, who always tries to help however he can in difficult situations, with his usual catchphrase of "oiski poiski", despite the other animals seeing him as an annoyance. Before the Vulture Patrol took him to the island, Sacha performed in a
circus in Spain, and he dreams of starting his own circus with insects as the stars, going so far as to train a
beetle, whom he names "Jeremy", to do tricks. •
Gertie – a female gorilla who was born and raised in captivity. She is rescued by Noah and the Problem Walrus from a cargo plane that crashed on a reef off-shore from the island. At first, Gertie and Rocco don't get on with each other, but they eventually form a relationship and have a daughter together named Tina after Diamantina. •
Wommie – a male
wombat who joins the island's community after helping Woomera find a
bandicoot in the Australian Outback. He is brave, adventurous, and has little sense of danger, often attempting life-threatening stunts in his efforts to have fun. •
Tusker – a male
African elephant calf who is brought to the island by the Vulture Patrol after being separated from his herd in a desert. Tusker's herd, including his 100-year-old Grandfather, arrive on the island shortly afterwards, and are shown to have joined the community. However, after the episode "Search for the Baby Elephant", the herd never appears on screen again, and no explanation is given as to where they are. Tusker continues to appear in later episodes despite this. •
Grandfather Elephant – a 100-year-old male African elephant who gives much wisdom and has much knowledge of ancient Africa. He's the leader of herd of African elephants, but he doesn't show very much on the series. His age catches up with him eventually and he goes out to sea to die. He asks Salomi and Mammothsbody to watch him, along with the baby elephant's mother. •
The Lion – a male
African lion with no name who was saved after he was shot by poachers. •
Wowee – a pampered female
French poodle who was travelling with her owners on a boat that washed up on the shores of the island during a storm. Her owners are never found, and she soon joins Reg's gang, becoming one of his fondest admirers and seeing him as the closest thing to a human on the island. She struggles to fit in among the other wild animals because of her domestic upbringing. •
Calanor – a male
aye-aye with the ability to
hypnotise other animals. At first, he arrives on the island intending to hypnotise and enslave the community and become their ruler. He eventually abandons this plan, but remains on the island. Despite having lived in the forests of Madagascar before arriving on the island, Calanor speaks in a stereotypical French accent. •
Imshee – a male
warthog who is an old childhood friend of Rocco's. He takes up residence on Noah's island after Rocco, Noah and Ursula rescue him from an abandoned zoo in East Africa; the same zoo in which Rocco spent his early life. •
The Do-Dah – a male
dodo chick who hatched from an ancient egg that was discovered in a cave by Sacha and Carmen. His accent and speech patterns are similar to a stereotypical pirate, using slang such as "Me Hearties". For a time he insists that dodos are not extinct, until he visits
Mauritius and an old
parakeet explains how humans brought about their
extinction. •
Natasha – a female
golden mole who Noah and Sacha find in the
Arabian Desert. When they first meet, Natasha is infatuated with Sacha, going so far as to propose marriage to him. However, she soon rejects him upon meeting a male of her species (who is never named). Noah brings the moles onto the island to assist in navigation, having heard legends that golden moles are expert navigators, but to his disappointment the moles turn out to be inept at navigation due to their poor eyesight. •
Rita – a hyperactive female
baboon who is brought to Diamantina from Africa to be Reg's mate. When Rita first meets Reg, she verbally abuses him and sees him as inferior, but she eventually warms to him and becomes his mate. It is never stated what kind of baboon Rita is, but she appears to be a different species from Reg the mandrill. •
Chip – a head-strong male
wallaby who Gertie and Wommie meet in Australia. He is brought to Diamantina to be Woomera's mate, and even though he is a different species and significantly smaller than Woomera, they still become close friends. •
Tallulah – a female rhinoceros who is brought to Diamantina to be a mate for the Valve Rhino. She is much more intelligent, well-spoken and articulate than the Valve Rhino, but they fall in love and become mates despite their differing personalities. •
The Komodo dragon – a frightening-looking but very kind male
Komodo dragon. Other animals which join the community on the island's way to Diamantina include a
pangolin, a
bandicoot, two
three-toed sloths, a
mongoose, two
Spix's macaws, an entire herd of African elephants,
rock hyraxes, and several
giant tortoises. While on their travels they also meet many animals that don't board the island such as an
Indian water-buffalo, a
dromedary camel, sea-turtles, some species of butterflies,
wildebeests, a
sea lion, a
wild cat,
dugongs, a
great white shark,
Indian cobras,
budgerigars, and a community of
kākāpō.
Residents of Diamantina •
Queen Abront – the primary villain of the third series. She is a giant, prehistoric frog who rules over Diamantina as a "Queen" and a "Mother". She is a traditionalist with a
prejudice towards any modern species, who she refers to as "Un-Froggables" and sees them as lacking respect for ancient ways; especially humans who she sees as all intelligence and no soul. However, she warms up to Reg and Rita who she comes to see as her children. On the final episode, she makes peace with Noah and trusts him to look after her frogspawn after Diamantina's destruction. •
Galeo – another giant frog and servant of Queen Abront. •
Morris – another servant of Queen Abront. Despite being loyal to Abront, he is friendly and kind-hearted, and does not see the "Un-Froggables" as a serious threat. He is also the smallest of the frogs, being closer in size to Sacha. •
Gorm – Salomi's father, he is an ancient mammoth who painted the map to Diamantia that Noah and the animals follow, and has lived on Diamantina peacefully since the ice age. Like Abront, he is defensive over Diamantina and sees Noah and the other animals as invaders who threaten to disrupt his tranquil life style. He and Mammothsbody have a bit a rivalry over leader of the herd despite them along with Salomi are the only three mammoths in the island. Eventually, he makes peace with Noah and joins the island when it leaves the ruins of Diamantina. ==List of episodes==