Ursula, a mermaid named after the Sea Goddess and the daughter of Poseidon. After the loss of her singing voice, Ursula decides to become strong and powerful like her namesake, and she uses her father's trident to transform herself into a cecaelia. ("Poor Unfortunate Soul")
Demigods are an Enchanted Forest species. They appear in the thirteenth episode of the fifth season. They are the children of a God and a human. Because of both of their parents, they are mortal people with strong powers. The demigod Hercules is the son of Zeus and a mortal woman. He has the power of super-strength.
Gnomes are an Enchanted Forest species. They appear in the second episode of the first season. They are little short humanoid creatures, with greenish skin and pointed ears. A gnome, which was one of the land's inhabitants with the darkest souls, helped the Evil Queen at her first attempt to enact the Dark Curse, by giving up a lock of his hair. When the gnome laughed at her failure, the queen turned him to stone.
Gorgons are an Enchanted Forest species. They appear in the tenth episode of the third season. They are magical creatures that have hair made of living snakes, as well as glowing eyes that turned those who behold them to stone. Medusa was a famous Gorgon in the Enchanted Forest. Some days after their wedding, Snow White and Prince Charming decided to attack her to use her head against the Evil Queen. However, Medusa turned Charming into stone. As the creature tried to find Snow, the latter tricked Medusa into meeting her own reflection and turning herself into stone.
Monstro is an Enchanted Forest creature. It appears in the twentieth episode of the first season. Monstro is a giant whale at sea who attacks and attempts to swallow Geppetto and Pinocchio while they are caught in a storm. Pinocchio sacrifices himself to give Geppetto the last life vest and jumps into the sea as a huge tidal wave engulfs everything.
North Atlantic Doves are a Land Without Magic species. It is a migratory species which forms strong monogamous bonds and is unique among American doves. During a walk in the forest, Mary Margaret stumbles across a trapped North Atlantic doves and takes her to the animal shelter. The veterinarian says that the bird itself is fine, but must be reunited with its migrating flock or risk being alone forever. After the storm clears, Mary Margaret succeeds in reuniting the bird with her flock, and her mate.
Dragonflies are a Wonderland species. They appear in the first episode of the spin-off. Dragonflies are insects about the size of a medium bird. Each one has a pair of translucent wings and a long tail with several short leg appendages, a pointed mouth, as well as two distinct horns sticking out the crown of their heads. They have the ability to breathe out large mouthfuls of fire. There are dragonflies flying around the area of the Mallow Marsh. Alice grabbed one and used it to spray fire onto the sticky surface of the swamp, and free herself and Will Scarlet from sinking in deeper.
The Sarlacc is a Wonderland creature. It is mentioned in the third episode. In the Red Queen's book, it is depicted as a long quadruped creature with two tusks and a tail. The book also shows it as living on a mountain near the ocean. It is able to digest his victims over a millennium.
Wonderland Rabbits are a Wonderland species. They first appear in the first episode of the spin-off. These anthropomorphic creatures have the ability to speak, to walk on two legs, and to think and act like human people. They are also wearing clothes.
Known Wonderland Rabbits:
Mrs. Rabbit is a healer. As the wife of the White Rabbit, she was kidnapped with her children by the Red Queen to force her husband to betray Alice. Eventually, she is freed while her husband decides to help Alice against her enemies. ("Home", "And They Lived...")
Mrs. Rabbit's mother and grandmother are also healers. They taught her how to become as good as they were. Mrs. Rabbit's mother is still alive, but it is unknown if her grandmother is. ("And They Lived...")
Percy, better known as the White Rabbit, is a close friend of Alice. Having the ability to open portals to other worlds, he is forced to take part in conflicts that are dangerous to him and his family. ("Down the Rabbit Hole" et al.)
The White rabbit's daughter is kidnapped with her mother and her brother when the Red Queen forced the White Rabbit to help her against Alice. Eventually, she is freed with the rest of her family. ("Home")
The White Rabbit's son was kidnapped with his mother and his sister when the Red Queen forced the White Rabbit to help her against Alice. Eventually, he is freed with the rest of his family. ("Home")
The Nemean Lion is a creature of unknown origin. It is mentioned in the thirteenth episode of the fifth season. The Nemean Lion was a powerful creature with fur as impenetrable as steel, making it invincible. Hercules' first labor was to defeat the beast. After a long exhausting fight against the Lion, Hercules accidentally dropped his torch which sets a brush on fire. The flames singed the Lion's fur from his body, so it lost its invincibility. Then, Hercules slew the beast, completing his first labor.
Pegasus is a creature of unknown origin. It is mentioned in the fifth episode of the third season. Pegasus was a flying horse with feather-covered wings. Pegasus' last feathers were used on the sail of the Jewel of the Realm, which allowed the ship to fly.
Pixies are a species of unknown origin. They are mentioned in the eighteenth episode of the third season. Little is known about this species, but they are known to be small in size, as Cora remarks that Jonathan "must have the brain the size of a Pixie". Pixie dust takes its name from them.
Sea Nymphs are a species of unknown origin. They are mentioned in the graphic fiction novel, Out of the Past. Not much is known about them. They live in a different realm than the Enchanted Forest. They have magic sand, which neutralizes any magic. A Sea Nymph met and gave some magic sand to William. He used it against the Evil Queen, before being killed.