Yullian

Yullian (ユリアンYurian), is Ultraman 80's childhood friend and rumored girlfriend. She originally went to Earth to warn 80 that King Galtan the Great is planning to assassinate him, but she ends up sticking around for a while and joins UGM: Utility Government Members (replacing Emi Jouno, who had been killed in action). She assumes the identity of Ryoko Hoshi. While not using any attacks as Yullian (other than Double Power, a combined attack with 80), she does shoot the Princess Ray, an infrared beam fired from the fingertips, as Ryoko.

Ultraman 80
The princess of Nebula M78, Yullian ran the world of light second only to her father,Yullian never engaged in combat until a tribe of mercenary style aliens known as Alien Garagara and their leader Emperor Galtan kidnapped Yullian and was planning to kill Ultraman 80. Yullian managed to escape to Earth where 80 was assigned to defend at the time. As UGM went to the area disturbances were found the Garagara wanted Yullian as she was disguised as a human named Ryoko Hoshi. After 80, under the guise of Takeshi Yamoto, defeated the tribe they killed UGM's only female member Emi Johno, giving UGM great rage. After 80 defeated the Garagara and their leader Galtan Ryoko joined UGM. For a time there was no need for her to take action until the negative energy of the Earth created the monsters Plazma and Minazma. 80 was being beaten by the dual monsters Plazma and Minazma unitl Ryoko showed her true form.With her help 80 was able to defeat the two monsters. Both Ultras would soon return to their home world after UGM defeated Margodon, ending the age of negativity and the Earth would be safe from monsters for twenty five years.

Mega Monster Battle: Ultra Galaxy Legends The Movie
After Ultraman Belial arrived at the Land of Light with Ultraman Taro defeated, she along many other Ultramen went to fight him. After the long battle, every Ultra was defeated by Belial. When Belial took the Plasma Spark, the

Land of Light was freezing, Yullian was seen helping a very hurt Ultra, with being helplessly frozen in a blink of an eye. After the Plasma Spark was recovered, Yullian along every Ultra went to listen to Ultraman King's speech.

Ultraman Zero: The Revenge of Belial
Yullian was seen along every Ultra Brother, investigating about the robotic piece that a Darklops Zero left, and later was discovered from where it came from. When Kaiser Belial's army arrived to the Land of Light to destroy it, every Ultra Brother went to fight his army, being able to defeat it after a hard battle.