The boy at the heart of the story. He lost his memory due to a certain event, but begins to regain it little by little during his journey after meeting Liu Bei and the others. He usually shows little emotion, but jumps at anything that interests him. When his anger peaks, he transforms into a Great Ape, losing his reason and going on a rampage. A harsh fate awaits him, but he stands tall, supported by the bonds with his comrades.

The young leader of the vigilante group "Dragon's Watch" in the Shu Area, and one of the heroes who saved Kingdom World from crisis. Though a young man overflowing with a sense of justice, he still shows a restless, boyish side. He has inherited the "Haro," which possesses mysterious powers, through generations. His encounter with Wukong Impulse Gundam leads him to throw himself into a battle for the fate of the world.

A young genius scientist. One of the heroes who saved Kingdom World by utilizing his wisdom and unique scientific technology. Though he specialized in working behind the scenes, in this work, he goes on an adventure with Liu Bei and Wukong. Unlike Liu Bei, he always makes calm judgments. He also has an otaku side as a collector, and during this adventure, he collects limited-edition items while traveling through the various worlds.

The captain of the police special forces. He responds to incidents with cool composure, protecting the peace of Captain City daily. He possesses armaments that only the special forces captain is permitted to use, which he equips when dealing with heinous criminals. He is knowledgeable and caring, looking out for Zhao Yun, whom he met in the city. He has been relentlessly pursuing a certain phantom thief for years, but the thief always manages to escape just one step ahead.

He calls himself a treasure hunter, but is wanted as a phantom thief in Neo World. He carefully stores the treasures he collects, and his daily pleasure is tea time while admiring his collection. One day, Zhao Yun visits to become his apprentice, leading him to become involved in this story.

The captain of a pirate crew famous in Pirate World. He has a boisterous and fearless personality, solving most problems through sheer momentum. He is an old acquaintance of Sun Jian, and since their personalities are similar, they consider each other best friends. He has a unique way of laughing: "Dooo-hah-hahhh!"

The vice-captain of the Benjamin Pirates. Like Benjamin, he is boisterous at heart, but usually maintains a snobbish and stylish personality. In battle, he corners opponents with calculated, intellectual plays. He often teases Sun Quan, but is also a good older brother figure.

One of the heroes of Kingdom World and the young leader of the Wei Area. Due to his high level of foresight, he once despaired of the future and strayed from his path. Through Liu Bei Unicorn Gundam's desperate persuasion, he exerted himself once more to save the country. After the country's reconstruction, he left, saying, "This is a journey to find what must be done," and set out to atone for his sins.

He once brought chaos to Kingdom World, but after being defeated by Liu Bei and Zhuge Liang, he vanished. In this work, he acts behind the scenes as the source of evil, plotting a global crisis. He studied under the same scientist as Zhuge Liang in the past and has a certain obsession with him.

The young Knight King who rules Knight World. His personality is upright and thoughtful, befitting a knight. Because of this, he is deeply trusted by his vassals and citizens. He has inherited a Haro through generations; intrigued by Liu Bei, who also possesses a Haro, he challenges him to a duel. During that duel, Arthur lectures Liu Bei on the nature of power and justice.