diff.text: In the 30th Century he takes on the name '''King Endymion''' and ascends to the throne alongside his now wife [[Usagi Tsukino|Neo-Queen Serenity]] and rules over the planet Earth and the Solar System with her. Together they have a princess who they name Usagi Small Lady Serenity  who is better known as either '''Chibiusa''' or simply '''Small Lady'''.
diff.text: == In the anime ==
diff.text: === Sailor Moon ===
diff.text: In the English anime, Mamoru is called '''Darien'''. His prince form is '''Prince Darien''', but '''Tuxedo Mask''' and '''Moonlight Knight '''retain their Japanese/manga names.
diff.text: Prince Darien was from Earth and fell in love with Princess Serena. Some of the guards mistook him for a spy, but [[Queen Serenity]] knew that he wasn't. When the [[Negaforce]] and [[Queen Beryl]] attacked, Beryl asked Darien to join her, but he refused, so she threatened to destroy him, and Serena as well, but they were all sealed inside the power of the Imperium Silver Crystal by Queen Serenity, who then sent them into the future, and Darien and all the Sailor Scouts, including Serena, to be reborn on Earth.
diff.text: Darien often got into fights and arguments with [[Serena]], and loves to annoy her and call her "meatballhead". As Tuxedo Mask, he would often show up to help her when she was at a disadvantage against a [[Negaverse monster]], giving her the opportunity she needs to destroy them. When [[Zoycite]] began seeking rainbow crystals, Tuxedo Mask would often show up to take them.
diff.text: [[Queen Beryl]] soon became interested in brainwashing Darien, and sent Zoycite to capture him by disguising herself as Sailor Moon and then stabbing him in the back, however, he escaped with help from [[Sailor Venus]]. Zoycite, aware that Darien was Tuxedo Mask, challenged him to a battle over the crystals. However, she double-crossed him, with [[Malachite]] taking the crystals, and he threw a rose at Zoycite to damage her face. Zoycite wanted revenge, despite the fact that Queen Beryl had ordered her to take him alive so she could turn him evil. Twice she tried to kill him; the first by shooting fire at him and Serena while they were in an elevator, forcing Serena to transform into Sailor Moon in front of Darien. Realizing Serena was Sailor Moon, Darien transformed into Tuxedo Mask, revealing his identity to her. However, Zoycite seriously injured him with an ice crystal. Beryl killed Zoycite as punishment.
diff.text: From here, Beryl and the [[Negaforce]] brainwashed Darien to turn him evil. Though working for the [[Negaverse]], Prince Darien often got into fights with [[Malachite]], and even helped out the Sailor Scouts (as usual) against Malachite's monsters. In Episode 37, he was healed by Sailor Moon, but Malachite returned him to the Negaverse where Beryl brainwashed him again. He fought Sailor Moon a final time in Episode 40, and was unaffected by Moon Healing Activation, but Sailor Moon convinced him to touch the locket, which restored him to normal once again. Beryl threw a spike at them, but Darien through a rose at the spike to shatter it and injure Beryl. After Beryl was destroyed by Serena, both Darien and Serena's memories were erased, until Sailor Moon R.
diff.text: === Sailor Moon R ===
diff.text: In Sailor Moon R, Darien appears to not regain his memories, but later appears as the Moonlight Knight. Serena often suspects that he is Darien. [[Ann]] falls in love with him, similar to how [[Alan]] falls in love with Serena.
diff.text: In the future, Prince Darien is the wife of Princess Serena, a.k.a. Neo Queen Serenity, and [[Rini]] is their daughter. As king, he appears to the Sailor Scouts as a hologram.