Mr. Prince

Mr. Prince is the adult/grown-up counterpart of the Little Prince and one of the main characters of The Little Prince, despise his small screen-time. He is an anxious janitor who is working in the Businessman's Company He is voiced by Guillaume Canet in the French version, and by Paul Rudd in the English version, who also portrayed Ant-Man in the Marvel Cinematic Universe

Appearence
Mr. Prince is a tall and thin man with blue/teal eyes, fair skin and blonde eyes. He wears a green suit with a brown belt and a yellow scarf who reminds his kid counterpart (like his haircut).

It was later revealed that the Academy Teacher uses a machine who turns him into an adult

Personnality
He is completely different from his original counterpart : he is extremely anxious, pessimistic and insecure. he is shown to be hard-working. His personnality changed because of the Academy Teacher's machine. He is shown to be annoyed by the Little Girl who "slowing down his productivity", but he decides to "help" her

During his rescue, he remembers (slowly) his Rose and his childhood, and he is finally more optimistic, confident and hopeful than before

The Little Prince
The Little Girl travels in the Businessman's asteroid in order to find the Little Prince. She heads up to the top of a building, where she finds him, but in his adult form.