Born on Mars and orphaned after his parents died in an apparent military coup, Akito's dream to become a cook stemmed from the quality of the raw food available. Though he has a nanomachine controller enabling him to pilot machinery, he refused to become a military pilot; his first time in an Aestevalis, a humanoid combat robot, was an accident, though he quickly showed capable piloting skill. Due to the lack of pilots on the Nadesico, Akito was officially made one for the duration of the tour of duty. A fan of the anime Gekiganger, his devotion to the series is rekindled by fellow pilot Gai Daigoji. Akito is romantically adored by nearly all the girls aboard the Nadesico, especially the ship's captain Yurika Misumaru, who he later proposes to and marries. Akito Tenkawa is voiced by Yuji Ueda in Japanese and Spike Spencer in English.
Yurika is the beautiful but ditzy captain of the Nadesico and childhood friend of Akito Tenkawa. Though he considers her crazy, Yurika has romantic feelings for him, and the two later get married. Yurika is shown to be very scatterbrained at times, misinterpreting comments made by others as words of inspiration and devotion, and forgetting or twisting events from her and Akito's childhood. Nonetheless, she is a very capable captain, and a constant source of cheerfulness and inspiration for the rest of the crew. Yurika is voiced by Houko Kuwashima in Japanese and Jennifer K. Earhart in English.
The "Electronic Fairy", she keeps the ship's computer (Omoikane) running and slowly bonds with it, asking it numerous questions about society and human interaction. Ruri is a child prodigy and somewhat distant from the rest of the crew, whom she considers "nothing but idiots" (Japanese ばかばっか baka-bakka). She is occasionally referred to as "Ruriruri" by fellow bridge crewman Minato and Aestivalis pilot Hikaru. In addition, she co-hosts the "Naze Nani Nadesico" segment, and is the narrator at the beginning of each episode of Nadesico, recapping previous events while adding her own opinion of the situation. Ruri is very cold and extremely knowledgeable of many things and doesn't like getting into the things that most crew members do. Rather she enjoys sitting back in front of the monitor regulating the Nadesico, playing video games and communicating to Omoikane. She does have her spontaneous moments like when during the pageant she dresses up in a bathing suit and sings (however, out of embarrassment, she drops out of the standings). Ruri Hoshino is voiced by Omi Minami in Japanese and Kira Vincent-Davis in English.
Manga - Ruri is full captain of the Nadesico. She seems not much different but she is given almost all the attention rather than just half. The mirror copy of her is the same and acts completely the same along with the fact that she is also captain of her ship. Both Ruris seem to also have an internal problem and cough up blood when under extreme stress.
Born Jiro Yamada (an average name, similar to John Doe or John Smith in English), he insisted that Gai Daigoji was "the name that belongs to (his) soul", and angrily asserted his "true" name whenever someone used the "other" one. A rabid Gekiganger otaku, he was an official pilot and arrived three days ahead of schedule when he learned they would be piloting actual robots like in the anime. Fueled by his devotion to the show, Gai had a fierce intensity in and out of battle, and was angry and resentful towards Akito for being the first one to engage the enemy, stealing "(his) destiny", even though he had a broken leg and was unable to fight. The two were soon able to bond over Gekiganger, although Gai couldn't understand why Akito would rather be "a dumb cook" than a robot pilot. Although it was Gai's wish to die heroically in battle like one of the characters, he was unceremoniously shot and killed during an escape of prisoners held aboard the Nadesico; Akito took his death very hard, and devoted himself to Gai and the ideals of Gekiganger. In the Super Robot Wars series of video games, the player can save Gai by fulfilling certain conditions, and in Super Robot Wars W, he lives as part of the game's default story, to the point of even having a game exclusive timeskip transition for both him and his Aestevalis Custom so as to fit him into the Nadesico movie's plot. Gai Daigoji is voiced by Tomokazu Seki in Japanese and Brett Weaver in English.
Megumi Reinard is a former voice actress who did work for cartoons and animated commercials. She is recruited by Nergal to be the communications officer aboard the Nadesico. Megumi has no love for war and killing in general. This is why she has a lot in common with Akito Tenkawa, who only wants to be a cook, not a pilot/soldier. She is also Yurika Misumaru's main competition for Akito's affection, though she is not really worried since the captain is oblivious to just about everything. Megumi is the first to officially be classified as Akito's girlfriend, beginning around episode 4. Megumi Reinard is voiced by Naoko Takano in Japanese and Jenny Strader in English.
The first officer of the Nadesico, Jun has no small infatuation for Yurika, leaving a position in the Earth's military to join her crew and "look out for her". She is clueless of how he feels and considers him her "best friend", though the rest of the crew realize his feelings. A common running gag is Jun's misunderstanding of Yurika's special efforts, such as preparing food--he believes it is for him, but it always ends up being for Akito, with him being passed by. It seems he has crush on Yukina. Jun Aoi is voiced by Kentarou Itou in Japanese and Mark X. Laskowski in English.
Developed the Nadesico's Phase Transition system for Nergal on Mars before it was invaded; when the ship returned to the planet, she came aboard, stating that the surviving colonists refused to leave, believing the ship would soon be destroyed; however, an attack immediately afterwards forced the grounded Nadesico to raise its shields, crushing the underground colonists and leaving her the only survivor. She hosts the "Naze Nani Nadesico" segment as a technical consultant along with Ruri and Yurika in an attempt to teach the crew about the ship's workings, as a way of atoning for what happened. Inez Fressange is voiced by Naoko Matsui in Japanese and Heather Bryson in English.
Aestivalis pilot and, she escaped from the L2 space colony when it was destroyed by the Jovians, salvaging four Aestevalis suits and fellow pilot Izumi Maki. The most fiery and combative of the three, but a surprise attack from the enemy left her terrified and crying out for help from Akito; this was noted and would be mercilessly brought up by Izumi and Hikaru many times, to her great embarrassment. Over time, she began to accept her feelings for Akito, but for the most part refrained from public displays of affection. Ryoko Subaru is voiced by Chisa Yokoyama in Japanese and Tiffany Grant in English.
Aestivalis pilot, brought in a storage container from the L2 colony by Ryoko. Quiet and reserved, though an incurable punster, cracking up at her own jokes. Izumi Maki is voiced by Miki Nagasawa in Japanese and Tamara Lo in English.
Aestivalis pilot and rabid Gekigangar III fangirl, she was ejected from the L2 colony in a capsule which crashed into the Nadesico; making her way through the air ducts, she was directly over Akito's room as he was watching a tragic episode of Gekiganger. Moved to tears, her wailing could be heard through the overhead vent, right before she fell out of it and onto him. She is a rabid Gekigangar III fan and one day wants to publish her own manga about the series with herself as the lead female, and two of the male leads in a shonen-ai relationship. During Martian Successor Nadesico: The Prince of Darkness it is shown that Hikaru becomes an actual manga artist, but is overstressed due to her profession. Hikaru Amano is voiced by Shiho Kikuchi in Japanese and Cynthia Martinez in English.
Nagare came into the picture after the Nadesico escaped from Mars; a skilled Aestivalis pilot, Nagare rescued Akito during battle as the latter was in a state of panic and unable to move. He was soon assigned to the Nadesico, bringing along Erina Won, who he had a mysterious relationship with. Nagare disparaged Akito for his devotion to the simplistic ideals of Gekiganger and the fact that he hates Japanese Anime altogether, but the two were still able to get along well enough. Nagare Akatsuki is voiced by Ryotaro Okiayu in Japanese and Jay Hickman in English.
The main helmswoman for the Nadesico. She gave up her job as the secretary for a large company's president so she could join the Nadesico crew. Her reason being that it sounded much more interesting. She has a mixed-up relationship with Goat Hoary. She helps Tsukomo and falls in love with him after a fight with Goat that ended their relationship. Minato Haruka is voiced by Maya Okamoto in Japanese and Kelly Manison in English.
Erina Kinjo Won
Erina joins the Nadesico at the same time as Nagare and proves to be just as irritating to the other characters. Her official post is co-helmswoman, but she ends up pushing orders onto everyone around and even the captain. She has a great fascination with Akito because of his boson jumping abilities and constantly confronts him to become a experiment guinea pig. In episode 22, she seems to cry when Akito leaves which may hint at her feelings for him also. Erina Kinjo Won is voiced by Yuko Nagashima in Japanese and Emily Carter in English.
Mr. Prospector's real name is never revealed, but he seems to not only be some sort of Nergal accountant, but the recruitment officer for the Nadesico. He is most known for agonizing over the loss of expensive equipment. Mr. Prospector is voiced by Kenichi Ono in Japanese and Paul Sidello in English.
Ace mechanic Seiya joins the Nadesico to get away from his wife and child, at the same time chasing around various young women. Most noticeable among them is Hikaru, who he almost has a relationship with. Seiya Uribatake is voiced by Nobuo Tobita in Japanese and John Swasey in English.
A serious man of few words, Goat seems to be the crew's guardian. He also has a relationship with Minato Haruka for a time. He is very big and very strong, capable of carrying Megumi and Ruri, one on each arm, and is a skilled marksman. Goat Hoary is voiced by Juurouta Kosugi in Japanese and Rob Mungle in English.
Head chef on the Nadesico, Howmei is responsible for making sure everything gets cooked correctly, even if it involves teaching Akito about the variety of spices and flavourings available on Earth. Given the very nature of the Nadesico's mission... and the fact that some of them might not live to see another day, Howmei want to make sure that every meal the crew eats is as good as they want... because it may be their last meal. Howmei is voiced by Miyuki Ichijou in Japanese and Marcy Rae in English.
Itsuki came on as a replacement pilot when Akito left the ship with Megumi during the Christmas return of the Nadesico to Earth. She is known as a great team player and an excellent pilot, but was killed in her first battle with the team. During production, she was unnamed, so she was referred to in-series as "Newbie" and "Seelie" (by Ryoko both times). She was originally named Sayuri Terasaki, but this name was retconned by her appearance as one of the lead characters in the Blank of Three Years video game. Itsuki Kazama is voiced by Houko Kuwashima in Japanese and Kelli Cousins in English.
The rich daughter of the Crimson family, Aqua appears briefly for one episode, as an analogue to Aquamarine: a character from Gekiganger III. Much like her namesake, she initially appears as a caring, beautiful, and respectful teen, only to later be shown as somewhat of a psycho, wanting to die along with Akito. She believes that by doing so, she will escape from her rich and boring lifestyle, and become a tragic heroine. Aqua also seems to be a remarkable cook, though it is implied that she always includes in her food a powerful paralyzing drug, making this point somewhat moot. Aqua Crimson is voiced by Yuko Mizutani in Japanese and Hilary Haag in English.
Tsukumo is a commander of the Superior Jovian Male Forces and a mecha pilot. He is similar in appearance and personality to Gai Daigoji, and ultimately dies in the same way. In the video game Super Robot Wars W for the Nintendo DS, he survives his assassination after Gai, with whom he had develeped a comrade-in-arms relationship with, took a bullet meant for him. During the six-month time period between the halves of the story, he marries Minato, ends up helping Kaname Chidori and her friends deal with the "Poniman" incident when things get far out of hand (in one version of the mission, he makes things worse, getting into a battle with Sousuke Sagara, another character voiced by Tomokazu), and participates in the events of the Prince of Darkness storyline. Tsukumo Shiratori is voiced by Tomokazu Seki in Japanese and Brett Weaver in English.
Yukina is Tsukumo's younger sister, and is horrified to find out that her older brother has fallen in love with an earth woman (Minato). She promptly leaves for the Nadesico to assassinate the woman in question, but after meeting her, she realizes Minato is a very nice woman and understands why her brother fell in love with her. When her brother is murdered, Minato becomes her only family. Within the next few years, Minato becomes like a mother to Yukina. She often bullies Jun, but it seems because she has crush on him. Yukina Shiratori is voiced by Ikue Ohtani in Japanese and Hilary Haag in English.
Tsukumo Shiratori's best friend and comrade in battle and off the field, however later jealousy forms within him for abandoning their Gekigangar 3 ideal of woman hood Mrs Nanako; Tsukumo still leaves despite Gen-Ichiro's protests. Later on Gen-Ichiro, believing Tsukumo had defected to the Earth Alliance's side and under special orders from Vice Admiral Hiroki Kusakabi, has Tsukumo shot to stop him from defending the Earth and plans to conquer Earth and Mars. Although later on during the series Gen-Ichiro has some slight doubts about where he should be and in the movie Martian Successor Nadesico: Prince of Darkness, Gen-Ichiro now works for Nergal in an attempt to stop his former commander and the Martian Successors. Gen-Ichiro Tsukuomi is voiced by Toshiyuki Morikawa in Japanese and Jason Douglas in English.