*Skye Zaizen, known as Aoi Zaizen in the Japanese version, is Yusaku's classmate and the younger step-sister of Akira Zaizen. In LINK VRAINS, she is a popular Celebrity Duelist under the alias Blue Angel. However with the Ignis becoming a threat, Skye took on a new avatar known as Blue Gal in the Japanese version). After partnering with the Water Ignis Aqua, Skye takes on a new battle avatar known as Blue Maiden to fight against Lightning and save Miyu Sugisaki. She is 16 years old.

Skye is a fair-skinned young woman with light brown hair in a bob-cut and yellow eyes. Her standard attire is a uniform that consists of a slate-colored jacket with a light blue trim, which she wears over a light yellow jumper. Underneath, she has a white dress shirt with a blue tie and heart-shaped clip. Skye's uniform also includes a short black skirt with black socks that reach below her knee and brown shoes. (In the dub, her socks are turned into leggings and cover all of her legs.) At home, Skye's casual clothes include a blue and white t-shirt with pink accents, light blue shorts with a pink drawstring, and baby blue slippers. When going out, she wears a white shirt with light blue jacket, a short blue skirt, and black socks on her brown shoes.

As Blue Maiden, her hair color is reversed. She now has long, wavy hair, with some pulled back in a bun, and a strand over her left shoulder. Her bangs now part to the right, reaching her shoulder, and a short pink highlight behind. Her tattoo is now a teardrop and she wears earrings like Blue Angel's, but upside-down and lack wings. She has a long black, white, and blue sleeveless waistcoat, and a pink and black skirt. She also wears a golden belt with the Trickstar logo, and a black armband with a pink stone on her left arm. There are black, forearm length wristguards with blue wings on the ends, and pointed pink tips at her hands. She also wears blue, pink, and black tights, and pink and black boots with blue wings. Unlike her previous two avatars, Blue Maiden wears a shade of soft pink lipstick. When Blue Maiden activates her Skill, she grows a pair of angel wings.

Skye is described as being very nice, polite, timid, and reserved on first sight. As a child, based on a picture of her, she is a shy girl, holding onto her mother. However, as a Celebrity Duelist, Skye becomes very active in LINK VRAINS. As Blue Angel, her personality is very bubbly, energetic and she is a smiling idol with a cheerful demeanor. She is very obedient to her older step-brother, Akira, but also wants to prove herself and is willing to show him that she can handle something on her own. She seems very distrustful of others, as she thinks most people only approach her for her connections to SOL Technologies. Despite this she is shown to be very grateful for people who have helped and saved her and she is also eager to help them in return.

Skye was shown to be get annoyed and angry when Emma lectured her. This carried on inside LINK VRAINS as Blue Angel said she was in a bad mood and felt like beating someone. When Blue Angel worked out Baira was behind the virus which infected her, Blue Angel became more determined to beat her and said she couldn't forgive her.

In season two, Skye's personality has shown to have matured and she decides to fight not just for herself but for others as well. She also began to question about the Ignis' right to live after witnessing the decompilation of one of them by SOL Technologies.*