Sailor Moon Crystal Wiki
Sailor Moon Crystal Wiki

Mamoru Chiba is the civilian identity of Tuxedo Mask.


Mamoru has short neat black hair and deep blue eyes. He is usually seen wearing his school uniform; Dark blue jacket over a white dress shirt and a red neck tie, long grey dress pants, and black shoes. He wears glasses when reading.


Mamoru Chiba is Usagi Tsukino's primary romantic interest and boyfriend. He is a second year student at Moto-Azabu Private High School. He lives by himself in an apartment building in Tokyo. Mamoru is described by Ittou Asanuma as the best, too perfect, the smartest student in the school, good at every sport and someone who is really nice to underclassmen.

Act 1 - When Usagi is upset about her grade on her latest test, she crumbles up the paper and throws it behind her, hitting a Mamoru who is dressed in a tuxedo. He complains to her, while making fun of her hairstyle and calling her "Bump-head". Usagi begins to complain to him, "they're buns not bumps". Mamoru begins to call Usagi "bun-head". When their eyes meet, they suddenly stare at each other in awe and Usagi's heart begins to beat faster. Mamoru stands outside the jewellery store, wondering if it might have the Legendary Silver Crystal he is seeking. 

Act 2 - A teacher from Crystal Seminar hands a flyer to Mamoru. Usagi who also received a flyer, crumbles hers up and throws it behind her hitting him in the face. Mamoru questions Usagi when he overhears her cat talking to her, which Usagi immediately declines.  

Act 3 - He is sitting next to Usagi at the back of a bus, he shows her his student ID card introducing himself as Mamoru Chiba a second year student at Moto-Azabu Private High School.  

Act 4 - While looking for her handkerchief to wipe up Usagi accidentally drops it without noticing and Mamoru picks it up.  

While Usagi is sitting outside of Princess D's ball alone Mamoru, who is unrecognised as Mamoru and believed to be Tuxedo Mask by Usagi because he is wearing a mask, asks Usagi to dance. They go inside and dance together.

Act 5 - Mamoru witnesses Makoto Kino being held by Motoki Furuhata who has an evil aura surrounding him after being hypnotised by the ghost Bride.

Act 6 - When Usagi wakes up in a strange apartment, she discovers Mamoru is the true identity of Tuxedo Mask.

Act 7 - While in Mamoru's apartment Usagi spots Tuxedo Mask's Top Hat and Mask. Mamoru describe that Usagi blacked out after her last battle and has been in a deep sleep ever since. He explains he became Tuxedo Mask in the first place to regain his lost memories and he needs the Silver Crystal to get them back. Usagi listens as Mamoru reveals that his parents were killed in a car crash on his sixth birthday and it was a miracle he survived but with no memory. After having a recurring dream filled with one phrase "Find the legendary Silver Crystal" he found himself roaming the streets at night, searching for the Silver Crystal in hopes that it was a clue to his lost memories. He wants to keep everything a secret between the two of them and he calls Usagi, Usako. Once Usagi leaves Mamoru's apartment she decides to call him Mamo.

Act 8 - Usagi comes across Mamoru sitting on a bench reading The Crystal Encyclopedia at the park. Mamoru is ashamed to look Usagi in the face because he was unable to protect her against Zoisite. When Usagi tries to return his pocket watch, Mamoru lets Usagi know he has something of hers but keeps the item a secret from her, and they will trade next time.

Act 11 - Mamoru who is now under the control of the Dark Kingdom, hypnotises Endou into leaving and then hypnotises Motoki into thinking that Mamoru is Endou. When Usagi is drawn towards the arcade is sees Motoki with a man who looks like Mamoru. While playing video games together, Mamoru unsuccessfully tries to hypnotise Usagi into telling him where the Sailor Guardians HQ is located.

After Makoto confronts Mamoru he hypnotises her to gain entrance into the Sailor Guardians Headquarters. Makoto contacts the Sailor Guardians and when they arrive she tells Usagi to stay away from Endou because he is an enemy after the Silver Crystal.

Act 14 - Mamoru and Usagi meet at the park, Usagi arrives late not because she had detention but she had the watch fixed at the jewellers. Mamoru reaches into his pocket and pulls out Usagi's handkerchief. They kiss. Luna-P hits Mamoru on the head. A large portal opens up in the sky above Usagi and Mamoru. A little girl falls from the portal onto the back of Usagi's neck and the little girl kisses Mamoru on the mouth.

Act 15 - Mamoru grabs Chibiusa just as the toy gun goes off and Usagi falls to the ground, Chibiusa runs off. Usagi and Mamoru find Chibiusa in a park sitting on a swing. When he takes Chibiusa's hand, Mamoru receives a vision of Crystal Palace. Usagi and Mamoru take Chibiusa to Usagi's home. When Chibiusa uses Luna-P to hypnotise Ikuko Tsukino, Kenji Tsukino, Shingo Tsukino, Usagi and Mamoru into believing she is part of the family, Luna knocks Usagi and Mamoru out of the way. Mamoru decides to investigate where Chibiusa may have come from.

Act 16 - Luna turns up at Mamoru's door wanting him to follow her to a park where they find Chibiusa and bring her back to his apartment. When Chibiusa wakes up crying in Mamoru's bed, Mamoru cheers her up with a Tuxedo Mask puppet and a rose. Mamoru notices a key and the Silver Crystal hanging around Chibiusa's neck. Chibiusa asks Mamoru if Sailor Moon is a good person because she believes she is the only one who can save her mother. The next day Mamoru brings Chibiusa and Luna back to Usagi's house.

Act 17 - Mamoru meets Usagi at the arcade with Chibiusa following. Usagi, Mamoru, Makoto, Minako and Motoki who are watching Chibiusa play the Sailor V video game are surprised at how good she is, achieving the highest score of all time. Minako and Mamoru notice Luna-P is helping Chibiusa win and agree not to tell Usagi. Mamoru takes Chibiusa home while Usagi, Makoto and Minako meet Luna and Artemis at HQ.

That evening Mamoru see's Chibiusa on the street at night puts his hand on her shoulder and receives a vision of an entire city exploding.

The next day at Fruits Parlor Crown Mamoru is disappointed that he doesn't think he'll be able to repair Luna-P for Chibiusa. Usagi is angry the Mamoru only ever talks about Chibiusa lately.

Act 18 - Usagi, Minako, Mamoru and Luna walk from HQ to Usagi's house to confront Chibiusa about how knowledge of the Black Moon. Chibiusa spots Mamoru holding the Black Crystal Earring inside a Petri dish and becomes very frightened by its presence. Chibiusa cries in Mamoru's arms, while Minako inquires as to why she is scared of the earring.

Mamoru takes out his stones to communicate with Kunzite, Jadeite, Nephrite and Zoisite who have received a dark premonition.

Act 19 - When Usagi informs Mamoru that Chibiusa is in love with him, he gets extremely embarrassed. Usagi and Mamoru spend the night together.

Act 20 - Mamoru awakens to find Chibiusa gone.

Act 26 - Mamoru arrives where Chibiusa first fell from the sky near the fountain in the park. He gives Chibiusa his Tuxedo Mask puppet as a farewell gift.

When Usagi and Mamoru kiss, Luna-P drops from the sky and bounces onto Mamoru's head followed by Chibiusa who lands onto the back of Usagi's neck again.

Act 27 Part 1 - Both Mamoru and Rei share a young girl's ominous premonition about the Sailor Guardians, accompanied by a voice which calls for her awakening and the destruction to begin. When Usagi runs off to meet Mamoru in the park so he can walk her to school, Chibiusa follows her.

When Mamoru bumps into Michiru Kaiou she drops her Deep Aqua Mirror. When the both kneel down to pick it up, Michiru notices he has noble eyes and asks if Mamoru was a prince in a previous life. As Usagi, Ami, Rei, Makoto, Minako, Naru and Mamoru are walking down the street, Umino suddenly appears from out of nowhere. When a Daimon appears, Mamoru wishes Usagi to be careful while he takes Naru and an extremely shocked Umino to safety.

After the fight Usagi, Ami, Rei, Makoto, Minako, Mamoru, Luna and Artemis meet at HQ to discuss recent events seen to be surrounded around Mugen Academy. Everyone agrees with Minako when she announces they will have to investigate Mugen Academy as soon as possible.

Act 27 Part 2 - Mamoru and Asanuma chaperone Chibiusa and her friends at the new amusement park in Sankakusu. Momoko Momohara tells Mamoru that Chibiusa left the park chasing after her hat. An angry Mamoru asks Asanuma to stay with Momoko, Kyuusuke Sarashina and the other boys while he goes after Chibiusa.

After the fight Mamoru arrives still searching for Chibiusa. He and the Guardians see Sailor Neptune and Sailor Uranus for the first time.

Act 28 - Usagi, Ami, Rei, Makoto, Minako, Mamoru and Chibiusa meet at HQ where Luna and Artemis have been analysis the two unknown Sailor Guardians. Mamoru thinks they could be enemies. That night he receives more of the same message through his dreams.

After Luna explains Mugenzu and Mugen Academy are both owed by Professor Tomoe, Mamoru checks out a the book "A Guide Book of Prestigious Private Middle and High Schools" to do research. He runs into Michiru who tells him, she heard that Professor Tomoe was expelled from the academic community some time ago. When Michiru gives Mamoru two tickets to her upcoming concert, Usagi oversees them together and recognises her as Sailor Neptune.

Powers & Abilities

  • Ability to see visions through touch