Tuxedo Mask

Tuxedo Mask (タキシード仮面, Takishīdo Kamen?) is a fictional character and one of the primary protagonists of the children's Sailor Moon metaseries. Named Mamoru Chiba (地場 衛, Chiba Mamoru?, Darien Shields in the English-language versions), he disguises himself in order to support the series' central heroines, the Sailor Senshi. Wearing a mask to conceal his identity, he interferes with enemy operations, offers the Senshi advice, and sometimes physically aids them in battle. Like the Senshi, Tuxedo Mask possesses a power item like theirs: a Sailor Crystal, which gives him guardianship over the planet Earth. He also has psychic powers, including psychometry and healing, which evolve and become important to the storyline in the manga, but which play only a minor role and remain static in the anime. Along with his primary love interest Sailor Moon, a significant player in much of the story, he has royal credentials in the "past life" storyline as well as in the future.

The Japanese version refers to him as "Tuxedo Kamen" while the dub refers to him as "Tuxedo Mask" when calling this character by his codename. Chibiusa and Usagi, in particular, also commonly refer to him with the nickname "Mamo-chan". The English-language dub often shortens his name, "Darien" to "Dar" as a nickname; however, this happens inconsistently.