Kira is identical to her sister Kaida in appearance only she has red eyes.
As a child, Kira showed a willingness to protect her younger sister Kaida from bullies and scary creatures. After finding out her sister was missing, Kira got angry with her brother Feather (believing it was his and their father's fault Kaida was gone). She stole a crocotta from the beastery and ran away from home to find her sister and was adopted by elderly basilisk Nuni. Overtime, Kira exhibited signs of an evil personality like her father (stated to be his firstborn). However, this was clearly false when Kira is quick to forget her original beliefs after finding out the true cause for her sister's disappearance. After a mission, Kira finds her father waiting for her with Nuni and the two reunite. She later reunites with Jayde after the latter recognizes her voice when Kira calls out to Kaida. The two sisters rush into the burning building to save their brother, sister, and father. She is also revealed to be the merciless criminal, The Dark Duchess. Kira is shown to be feisty and sassy and has a personality similar to Aasira. She is also shown to love animals as seen when she is shocked that the cyclonians had a beastery. She fights with an energy sword powered by a rare green striker crystal.
Like Basilisk, Kira owns a flamethrower and a whipcord launcher. She also has a small robotic arm attached to a pack on her back that holds a plasma blaster. The arm can also launch 20 tiny missiles.
Trivia:
Kira's name means "Little Dark One".
Kira is the tallest out of her siblings. Despite being 15 years old, she reaches to her father's shoulders, implying she's inherited his height.
Even though she clearly states, she hated her father, Kira defends the latter on numerous occasions.
As a personal gag, Kira is shown to have an evil laugh like her dad.
Kira has inherited most of her father's traits out of her siblings.