She is a Sylph with middle-length blonde hair tied with a short braid and turquoise eyes.
She wears a violet top with armor on her chest and a short purple cape with a black trim over her left shoulder. She also dons violet short pants with a brown belt, where she carries the scabbard for her dagger. On her right forearm, she wears a silver armor with golden trimming, and on her arms, matching vambraces above fingerless, elbow-length brown gloves. On her feet, she wears brown boots.
Sybil possesses a strong moral and ethical code, with a strong belief in freedom.
She demonstrates strong will and determination as he desires to fight alongside her comrades. She has shown strong will when she is angered or while she fights, not doubting to protect the people she cares about.
Sybil joined New ALO sometime between 2025 and 2026. She spent most of her time as a solo player. After she was captured by The Supreme Legion, and then released by the Knights of the Blood, she decided to join the guild, and fight against Hao in the Great Aincrad War.
Sybil and Lamorak had a very friendly relationship since they met. They supported each other and battle and respected each other skills. As time passed, they started to develop romantic feelings for each other, and they became a couple.
She first met Kirito when they attacked the legionary camp where she was captured. She joined the guild after this. She has deep trust and faith on Kirito, believing he will win the GAW.
Sybil is a skilled and agile warrior. She relies mostly on her agility, speed and swift movements, which is helped by her skill with a spear. She generally moves arround the opponents eluding the attacks and attacking while being distanced. Besides her skill with spear, she uses as secondary weapon a dagger. She is sometimes seen using both weapons at once.
Her abilities in battle make her one of the best fighters in the guild.