Birdy Cephon Altera

Birdy Cephon Altera (アルテラ·シフォン·バーディー, Bādi Shifon Arutera ), also known as Shion Arita (有田しおん, Arita Shion) is the title character of the series and the main protagonist. She works for the Space Federation Police. Birdy is voiced by Saeko Chiba in Japanese and Luci Christian in English

Personality
As Shion Arita, Birdy is a bubbly and slightly ditzy pop star and model. However, Birdy hates posing as Shion Arita, and her actual personality is more serious. Birdy takes her job as a Federation police officer very seriously and believes in upholding the law--she considers it her duty to bring in criminals and protect the innocent, and will rarely kill unless given express permission. She also expresses disgust at friends and coworkers who are willing to use lethal force.

Despite this, Birdy does possess a sharp temper, and tends to kick objects around and cause destruction when angry. She also frequently gets into arguments with Tsutomu, whom she loves to tease, particularly since she tends to take over his body without warning or permission.

Birdy has a habit of saying "yessiree" often when undercover as Shion.

Background
Birdy is an Ixioran Altan, a bio-engineered super soldier. As a child she was cared for by a marionette named Violin, and befriended an Altan boy named Nataru, in addition to her guardian, Tuto. Skeletso was her trainer.

When Birdy was roughly ten years old, she was caught up in a terrorist attack while at Central Tower, and Violin died trying to protect her from a war machine called a berserker. Birdy then destroyed the machine in a rage, earning her the nickname "Berserker Killer Birdy."

Abilities
Birdy can run at extreme speeds to the point where she could run faster than cars on the highway. She also has a great skill in fighting, as she was able to easily overpower Geega.