Urchin- Urchin is an orphan who was living on his own until he teams up with the lobster mobster who makes him steal food and other valuable items. However Ariel convinces him to give up his life of crime and they become friends.
Dudley- a sea turtle who advises Triton and helps him with calculations
Spot- A baby killer whale with a white spot on his back who makes friends with Ariel after getting separated. Ariel tries to keep him hidden as her pet but of course he gets free adn destroys everything. Just when everyone decides he really isn't dangerous, his herd returns and he leaves with them. However he returns later and ends up being captured by Peter Pettigrew for his show. Of course Ariel, Flounder, and Sebastian rescue him!
Stormy- A wild giant horse that is being kept in the palace's stables. Ariel wants to ride him, and secretly rides him into the wilderness where he is caught. Eventually Ariel lets him go free.
Simon- A loud rambunctious sea monster who has no friends. He puts a message in a bottle and Ariel comes to his aid. She brings him home and evryone is annoyed by him until he stops an attack.
Pearl- A blonde bombsheel teenager who is one of the most popular mermaids under the sea. She takes Ariel with her to visit eelectric city.
Gabriella and Ollie- Gabriella is a deaf and mute mermaid. Ollie is her translator and best friend. They meet Ariel and her friends and together they go to a magical cave to make their wishes come true.
Lucky- a bad luck creature who is befriended by Ariel after tryign to escape form Ursula's wrath. Ariel manages to convince everyone that Lucky isn't bad luck. Lucky ends up giving birth to several little bad luck creatures.
Archimedes- A merman who is fascinated with the human world and lives isolated in a shuken ship and is an expert(much more than scuttle) of human things.
Moray- A creepy sales man eel who sells in treasures and maps.
Evil Villians
The Evil Manta- An evil manta-ray who was locked away by the merpeople, until Ariel lets him free. He tries to make everyone unhappy and take over the sea but Ariel stops him. He also has a son who doesn't want to be evil, in fact he lieks to draw.
The Sea Clops- a monster who sleeps for one hundred years. Unfirtunately Ariel's loud playing of the Calliope, wakes him up and he gets angry and destroys the Calliope. Ariel puts him to sleep by playing the harp. They also give him ear muffs so he can sleep in peace.
Sharkanians- Enemies of King Triton who try to take over the city with an elaborate plan. They are very cunning and very dangerous.
Sorceror Blowfish- A blowfish who lives in the mountains of Abracadablo where they cast various spells on fish. If the laws are broken they have a strict penalty of working in the bubble mines.
Glowfish- A former treasuer of Triton, obessed with money. He tries to trick Triton into giving him his treasure.
-
The Lobster Mobster- a mafia lobster who tries to steal some of Triton's money. HIs sidekick is Da Shrimp who is the comic relief.