King Endymion (キング エンディミオン, Kingu Endimion) is the name taken by Mamoru Chiba during the reign of Neo-Queen Serenity in the distant future. He does not appear for very long in either the anime or manga, so there is very little known about him.
Quick Answers
What is the relationship between Neo-Queen Serenity and King Endymion?
Why does King Endymion appear as a spiritual entity in the manga?
What is the role of King Endymion in the Crystal Palace?
What is the significance of King Endymion's white tuxedo and lavender cloak?
In which Act does King Endymion first appear in the manga?
Appearance[]
He wears a white tuxedo, lavender cloak, and a white mask.
Information[]
King Endymion's first appearance is in Act 19. He is not actually in a physical form but a spiritual entity guarding the Crystal Palace while his real body sleeps. During this time he helps to guide the Sailor Guardians and his past self against the Black Moon Clan. It is then revealed to the Guardians that Mamoru never aged due to the Silver Crystal's power. It is the ghost of King Endymion who instructs Tuxedo Mask to use his attack "Tuxedo La Smoking Bomber."
Prince Endymion becomes King at the end of the battle with the Dead Moon Circus when Helios, the priest of his former home, Elysion, hands him his sacred Golden Crystal atop his king's staff. After this, both Tuxedo Mask and Sailor Moon turn into their respective future selves and all of the Sailor Guardians transform into their princess forms. However, after this point, Mamoru is not seen in this form again.
Abilities and Powers[]
His special abilities are largely vague, but he can perform a dual attack of their strongest attack, Tuxedo La Smoking Bomber with his younger self.
The special properties of his mystic staff are unknown.