text: Yaten Kou, also known as Sailor Star Healer, is an alien from a distant system who came to Earth in hope of finding her princess.
  
  Yaten, who appears only in the last season or Manga arc, is also a part of a band known mostly as the "Three lights," made up of Seiya Kou and Taiki Kou, all of whom are aliens and Sailor Soldiers; Kou, some fans speculate, as being all of their first names, though most believe otherwise.
  
  
  == In the anime ==
  In the anime, Yaten is shown with an obnoxious, self-centered attitude. He cares for nothing but finding their missing princess, whom they spend most of the show looking for, and does not wish to join forces with the other soldiers.
  
  He finds Earth girls mostly annoying because of their obsessions and recieves tons of fanmail everyday, which he throws away. However, in episode 178 "Luna Saw it, Idol Yaten's real face," Luna discovers a different side of Yaten. Also in episode 192 "Straight to your dream! Idol Minako is born?", Minako tried out for an&nbsp;audition which Yaten was one of the judges, and when he sees her there, he loses his temper and starts to critisize Minako for coming to the audition and instead asks her if she cares what will happen to her planet. He then sees how much being an Idol really means to her and starts to ask himself if he really forgot what it meant to dream? As the episode progresses he helps Minako and Usagi to fight the phage. During the episodes ending Usagi encourages Minako and gives her luck to win the audtion, but Minako points out that is she doesn't win, "Well if I don't, It's all Yaten's fault!"and Yaten replys saying "I judged harshly!", and Minako says "What?" and he says back to her "However, you shined the most!" and Minako blushed in a happy smile. In that episode Yaten&nbsp;shows his soft side to Minako when she says to him that "Yaten, you shine the most!" and he smiles back to her.
  
  Even though Yaten is a girl cross-dressed as a boy in the manga, and in the Anime Yaten is a male when he is in human form, but in his transformation, he turns into a girl. Even that, there are many Yaten and Minako Couple Fans, who support the couple even though their both females. In the Anime, Manga, and Musicals Minako has the biggest crush on Yaten out of all Three Lights, she prefers Yaten more than Seiya, and Taiki.
diff.text: He finds Earth girls mostly annoying because of their obsessions and recieves tons of fanmail everyday, which he throws away. However, in episode 178 "Luna Saw it, Idol Yaten's real face," Luna discovers a different side of Yaten. Also in episode 192 "Straight to your dream! Idol Minako is born?", Minako tried out for an&nbsp;audition which Yaten was one of the judges, and when he sees her there, he loses his temper and starts to critisize Minako for coming to the audition and instead asks her if she cares what will happen to her planet. He then sees how much being an Idol really means to her and starts to ask himself if he really forgot what it meant to dream? As the episode progresses he helps Minako and Usagi to fight the phage. During the episodes ending Usagi encourages Minako and gives her luck to win the audtion, but Minako points out that is she doesn't win, "Well if I don't, It's all Yaten's fault!"and Yaten replys saying "I judged harshly!", and Minako says "What?" and he says back to her "However, you shined the most!" and Minako blushed in a happy smile. In that episode Yaten&nbsp;shows his soft side to Minako when she says to him that "Yaten, you shine the most!" and he smiles back to her.
diff.text: He finds Earth girls mostly annoying because of their obsessions and recieves tons of fanmail everyday, which he throws away. However, in episode 178 "Luna Saw it, Idol Yaten's real face," Luna discovers a different side of Yaten.
diff.text: Even though Yaten is a girl cross-dressed as a boy in the manga, and in the Anime Yaten is a male when he is in human form, but in his transformation, he turns into a girl. Even that, there are many Yaten and Minako Couple Fans, who support the couple even though their both females. In the Anime, Manga, and Musicals Minako has the biggest crush on Yaten out of all Three Lights, she prefers Yaten more than Seiya, and Taiki.