Overview Image Gallery
Ciel has dark skin, short, navy blue hair, and blue eyes. She also has a gold marking consisting of an oval shape surrounded by four smaller circles in the center of her forehead.
She wears a blue beret, a plain gray button-down shirt with an asymmetrical collar, a blue combat skirt, and fingerless, elbow-length black gloves with a wristwatch on her left hand.
She appears to be very regimented and by-the-book, and speaks with a near-monotone, matter-of-fact voice. When Ruby asks if Penny considers Ciel to be her friend, Penny replies that Ciel is merely ordered to spend time with her. Ciel is often seen to be conscious of the time, looking at her wristwatch and literally timing a minute when Penny asks for a minute to herself.
Ciel Soleil participated in the Vytal Festival along with her team from Atlas Academy. After her team won their match in the team round of the tournament, she and Penny were selected to represent them in the doubles round. During the doubles match against Russel Thrush and Sky Lark of Team CRDL, Ciel is not seen fighting, and merely times Penny's performance on her wristwatch during the match.
After the match, she meets Ruby Rose, who caught up to talk to Penny. Ruby attempts to introduce herself, but Ciel quickly interrupts, revealing that she already has detailed knowledge about her, and also calls her "questionable". Ciel later allows Penny to speak to Ruby for a minute, but interrupts their conversation and calls her away once her minute is up.
According to Penny, Ciel is not aware that she is an android. Penny also states that Ciel is not her friend, and merely spends time with her because she is under orders to do so, in order to keep her out of trouble.
- Her name is French, with ciel meaning "sky", and soleil meaning "sun". Her name fits the Color Naming Rule by alluding both to the blue color of the sky as well as the yellow color of the sun.
- Her relationship with Penny and color scheme may indicate that she is derived from the blue fairy from the adventures of Pinocchio.
- Although her first significant appearance was in Never Miss a Beat, she cameoed in a photo alongside Penny as Cinder is pre-assigning the contestants of the next day's battle in It's Brawl in the Family.