As a spy for the Lepton Kingdom, D has been stationed on earth for a long while, searching for signs of their missing princess. Her long exile comes to fruition when she encounters A-ko and C-ko racing to school one morning. She continues to stalk the pair, despite suffering massive (but accidental) bodily harm whenever they meet.  Like the Captain, D is in fact a woman, but appears very masculine to Earthling eyes. This confusion is cleared up at the end of the first movie, when she dons a very scant uniform to battle A-ko.  Although D does try to kill A-ko, she remains fervently loyal to C-ko, even going so far as to sample C-ko's toxic cooking out of respect. However, her main goal is to get C-ko back to the Lepton Kingdom, whether she wants to return or not. During the series, we see her sticking close to Napolipolita, indicating they are close friends as well as fellow soldiers.  (Source: Wikipedia)

On a splendid morning, an effervescently cheerful teenaged schoolgirl named A-ko sets off for school with her delightfully ditzy friend, C-ko. The duo are students in a marvelous futuristic city, but A-ko is about to run afoul of the wealthy and powerful B-ko, a young lady used to getting everything she wants—and what she wants is C-ko! Also, a vast and powerful alien fleet is about to touch down in Graviton City, and they're after something, too. Fortunately for us, A-ko’s no ordinary schoolgirl—she’s got super powers of her own! 
 
(Source: Discotek)

[Profile (81 Produce)](https://www.81produce.co.jp/actor_search/index.php/item?id=41) | [Wiki (jp)](https://ja.wikipedia.org/wiki/玄田哲章)

Affiliated with 81 Produce.

Father of [Albert Segarra](https://anilist.co/staff/113975) and [Nuria](https://anilist.co/staff/102326)

Three weeks after the incident that left Captain Napolipolita's ship balancing on top of Graviton City, A-Ko and the gang go on summer vacation. While A-Ko ponders losing some weight and B-Ko devises another plan to defeat her redheaded rival to win C-Ko, Napolipolita and Spy-D experience severe homesickness - begging for a way to return to their home planet. Meanwhile, Hikari Daitokuji - B-Ko's father and the CEO of the Daitokuji Financial Group - arms the local military with new mecha to attack Napolipolita's ship and obtain its advanced technology.
 
(Source: Anime News Network)

Robert Smith was a radio host, actor, and voice actor whose roles include Kaijinbo in InuYasha and Genma Saotome in Ranma ½. He died on June 1, 2010 due to pancreatic cancer and liver cancer. The "O" in his name was to distinguish him from other Robert Smiths, and does not represent anything.

In the middle of another break from school, A-Ko dreams of finding the perfect boyfriend. Because of this, she and C-Ko get into an argument that leads to C-Ko running away and nearly getting hit by a motorcyclist named Kei. While working part-time at a fast-food restaurant to raise money for a party dress, A-Ko meets Kei and immediately falls in love with him. B-Ko happens to like him as well; however, both A-Ko and B-Ko are unaware that C-Ko is the apple of Kei's eyes.
 
(Source: Anime News Network)

In Iraq, a group of archaeologists discover ancient relics that prophecize the coming of a superior race and the end of all civilization. Meanwhile, back in Graviton City, as A-Ko and B-Ko's rivalry over Kei intensifies, Mr. Daitokuji sets up an arranged marriage between Miss Ayumi and Kei. Furious over the engagement, both A-Ko and B-Ko do whatever it takes to prevent the wedding from going through. Little do they know that another alien fleet is on its way towards Earth.
 
(Source: Anime News Network)