A girl from the Duchy of Artoria, a country depicted within a painting. She is characterized by mysterious eyes resembling "Artoria Blue" and long yellow hair. She refers to herself with the archaic "warawa" and speaks in an old-fashioned, regal style. She has a tomboyish and brave personality.

A boy who is poor at both studying and sports, but is kinder than anyone else. He has a crush on Shizuka.

A blue cat-shaped robot. However, he has no ears because they were bitten off by a mouse. Nobita's friend. He has a spherical head and torso with short limbs. His body is two-toned; blue on his back and limbs, and white on his face and belly. The tip of his nose and tail are red. Due to his appearance, he is often mistaken for a raccoon dog by people meeting him for the first time, which makes him furious. He produces gadgets from his Four-Dimensional Pocket. He refers to himself as "boku" (soft/polite) and lives with Nobita.

He usually bullies Nobita along with Gian. He cries when he falls into a predicament despite his bravado.

A neighborhood bully confident in his physical strength. He is passionate and values friendship deeply.

She can produce and manipulate water from her fingertips, capable of shooting through targets like a water gun. She loves taking baths.

A 10-year-old boy with flaxen hair living in the Duchy of Artoria who is skilled at painting. He is Claire's childhood friend. Born into a family of court painters for Artoria Castle. While he lives within the castle, he also maintains an atelier on the shores of Lake Artoria.

A young man with purple hair dressed in purple clothing. An art merchant in the Duchy of Artoria who frequently visits the castle to trade paintings. His true identity is a member of the Time Patrol. He was once detained by Doraemon and the others under suspicion but eventually reconciled with them. He is gentle and clumsy.