The American animated television miniseries Over the Garden Wall features a cast of fictional characters created by Patrick McHale. The series revolves around two half-brothers: Wirt (voiced by Elijah Wood), the awkward and pessimistic older brother, and Gregory (voiced by Collin Dean), the energetic and optimistic younger brother. The duo travel through a strange forest, searching for the way back to their home and encountering wondrous things along their journey. On their quest, Wirt and Greg interact with characters such as a bluebird named Beatrice (voiced by Melanie Lynskey), the Woodsman (voiced by Christopher Lloyd), and the Beast (voiced by Samuel Ramey).
The Woodsman (voiced by Christopher Lloyd) is a former municipal judge who moved to a house in the country with his wife and daughter, as others with him in the city. He wears a stove pipe hat, dark-coloured clothing, and black boots. He is often seen carrying the Beast's Dark Lantern, an axe, or, strapped to his back, a large bundle of wood. His wife was fatally wounded by an unidentified creature, and the Beast tricked him into thinking he placed the soul of the Woodsman's daughter in his Dark Lantern, promising that his daughter's soul would live on as long as the flame within the lantern was alight. This forced the Woodsman to begin chopping down Edelwood trees in order to keep the lantern's fire burning.
Gregory's pet frog (voiced by Jack Jones) is a frog found by Greg shortly after he and Wirt crossed into the forest of the Unknown. Greg has given the frog many names, including "Kitty", "Wirt", "George Washington", "Benjamin Franklin", “Dr. Cucumber”, and “Greg Jr.” until ultimately deciding on "Jason Funderburker". The frog comes along with Wirt and Greg on their search for the way back home through the forest, and has the ability to speak English and to sing.
The Beast (voiced by Samuel Ramey) is almost always depicted in the form of a silhouette. He is well-spoken and manipulative, and has the power to possess other creatures. He has a humanoid shape and a pair of antlers. His eyes glow a faded white colour, yet can have red pupils and yellow-light blue sclera. The Beast forces the Woodsman to carry and fuel his Dark Lantern, which contains the Beast's soul, under the guise that it contains the soul of the Woodsman's daughter. Throughout the miniseries, the Beast follows Wirt and Greg, trying to turn them into Edelwood trees to fuel his lantern. When the light of the lantern is shined upon the Beast in the final episode of the miniseries, he is revealed to be composed of various grotesque faces, likely from the souls of those he has turned into Edelwood trees. The Beast is killed when the Woodsman extinguishes the flame within the lantern.
Adelaide of the Pasture (voiced by John Cleese) is an old woman and the sister of Auntie Whispers. She promises Beatrice that she will give her magical scissors to undo the curse placed upon Beatrice's family. She traps Wirt and Greg and attempts to turn them into her servants, but is killed when Beatrice opens a window in her house, causing the night air(which is poisonous to her) to melt her.
In the eighth episode of the miniseries, Greg has a dream when asleep with Wirt under a tree, dreaming of himself in a fictional location called Cloud City. The City has various committees, including the Cloud City Reception Committee (voiced by Judah Nelson); the Cloud City Auxiliary Reception Committee; a trio of animals known as Hippopotamus, Giraffe, and Monkey; and an unpleasant-looking dog with a rain cloud over its head known as the Fourth Reception Committee. The city is filled with angels and various cartoon animals, including elephants, dogs, and rabbits.
The Queen of the Clouds (voiced by Deborah Voigt) is the ruler of Cloud City, opposed by the havoc-stirring North Wind (voiced by Mark Bodnar).