TV-Series
Description
Mami Endō shares a long-standing friendship with Marika Kato, dating back to at least their middle school years. Both attend Hakuoh Academy and work part-time as waitresses at the upscale retro Lamp Café. Mami possesses light brown eyes and brown hair styled in a semi-bobcut with a trimmed fringe. She wears the standard Hakuoh Academy uniform at school and a maid outfit while working.

Her personality is friendly, supportive, and generally carefree, always seeking opportunities to assist her friends. Despite this, she maintains a level-headed approach. She has never traveled into space, unlike most characters involved in spacefaring activities.

Mami exhibits notable tailoring skills, frequently modifying Marika's pirate uniform to enhance its appearance with adjustments to the cape and additions like ribbons and flowers. She designs and creates costumes for the Hakuoh Academy Yacht Club during their missions, such as providing outfits when they assist Marika in operating the Bentenmaru for a pirate raid. She is also a member of the school's knitting club.

Throughout various story arcs, Mami remains a consistent presence in Marika's life, observing her struggles with balancing school, work, and pirate responsibilities while offering encouragement and practical help. During the Golden Ghost Ship arc, she modifies Marika's captain uniform and suggests using it for yacht club recruitment. In the Hakuoh Pirates arc, she supplies Gruier Serenity and the yacht club with custom-made costumes for their operations. She later lends Gruier a maid outfit and uses a pirate password to visit Marika's home.

In the film *Abyss of Hyperspace*, Mami responds to competition from a new family restaurant, Lerad's, by designing a mascot costume for Lamp Café. She gives Marika an updated pirate uniform she has been working on and serves Marika, Kanata Mugen, and Chiaki Kurihara at the café, identifying Scarlett Cypher as affiliated with the Yggdrasil Group during this event.

Her relationships include a strong bond with Marika, whom she supports through various challenges. She maintains a friendly but occasionally exasperating dynamic with Chiaki, who is irritated by Mami's habit of using the honorific "-chan" against her wishes. She is on good terms with Gruier, aiding her with information and costumes, and collaborates with the yacht club despite her personal disinterest in space travel.