Roverandom

Major

• Rover(andom) - The main character. A young puppy that is white with black ears. He is rather rude and excitable when first introduced. This is what causes him to irritate Artaxerxes in the first place.
• Artaxerxes - The wizard who meets Roverandom while on holiday. Wears a green hat with a blue feather in it. Comes from Persia but got lost and now lives in Pershore.
• Psamathos Psamathides - The chief of all Psamathists (sand-sorcerers). He is described as being the size of a large dog and being very ugly, with long ears that stick up. Days and nights he hides closely under the surface of the cove's sands, taking a nap - or two. He snuggles himself into the sand as into a warm blanket and only comes out when the sky begins to look like teatime or when some amusement is going on: a dance of the mermaids, for example. Otherwise one can hardly find him, tucked up amidst the endlessly stretching covesands. (This being somewhat resembles the Psammead from E. Nesbit's Five Children and It.)
• Rover the Moon Dog - The Man in the Moon's dog.
• Rover the Sea Dog - The Dog under the Sea.

Minor

• Tinker - The cat whom Rover lived with before becoming a toy.
• Little Boy Two - The boy who owned Rover as a toy. An allusion to Michael Tolkien, the author's second son.
• the Great White Dragon - The chief of the Moon's dragons.
• the Sea-serpent
• Uin - The right whale that takes Roverandom under the Sea.
• Grandmother - Roverandom's first owner. It is revealed at the end that she is the grandmother of Little Boy Two.
• the mer-king - ruler of the mer-folk
• Mrs. Artaxerxes - Daughter of the mer-king and wife of Artaxerxes.

• The Moon - Rover goes to the Moon seeking the Man in the Moon's help. The Moon is highly fantasized; envisioned by Tolkien as a place full of mythical creatures reminiscent of those found in the works of Lewis Carroll. Traits of the Moon's trees foreshadow those of the mallorn trees of Lothlórien.^[1]
• The Cove - Where Psamathos lives and Roverandom is accidentally left by Boy Two. It is located on the north-east coast of England. Its description as a "queer cove", an allusion to the English expression meaning 'odd fellow, rogue', is one of many plays-on-words in the book.
• The Isle of Dogs - An island Mew and Rover fly over on the way to the moon. Mew describes it as a place lucky or deserving lost dogs go. A place where they can make as much noise as they want, with bone trees growing everywhere. It is a fanciful allusion to the Isle of Dogs and the Dogger Bank.
• Under the Sea - The mer-king's realm
• Faery: the tale's brief glimpse of the Shadowy Seas and Elvenhome links it to Tolkien's Middle-earth legendarium.

• Tolkien, J. R. R., Roverandom. London: HarperCollins, 1998.