Xenian is one of an evil race of alien blossoms. Not much is known about this wicked weed, except that others of her kind have managed to destroy whole planets. By herself, Xenian can't do much, but she has the ability to control someone with a weak heart and use them as her pawn. Once she fills her victim's heart with darkness, she gives them magical powers, so they will do her dirty work for her. Fiore found this certain Xenian in the ground of debris of a previous planet she had destroyed. Not knowing what she was capable of, Fiore pulled the Xenian out of the ground and his friendship feelings were used against him, in which she used Fiore to travel to Earth, and this planet would be her next target. Xenian convinced Fiore that the people on Earth had left Mamoru alone, and putting the idea of revenge in his mind and granting him powers to help her cover the Earth with blossoms. She also possesses the power to move her spirit into her victim, changing their appearance and attempting to control them physically. Xenian's main power is persuasion, but backfires on her when Usagi shows Fiore the truth about the Rose he was given by Mamoru as a small child. Once Fiore had removed her from his mind, she was vulnerable to the cleansing light of Usagi's Silver Crystal, and she was destroyed.