Sylia Stingray is the founder and leader of the Knight Sabers in the anime series Bubblegum Crisis
Original[]
Sylia's father was murdered by Brian J. Mason several years before the series began. Sylia was the one who recruited the Knight Sabers through various means such as creating a computer system that only a genius could hack into, appearing as a talent scout for an aerobics audition and hanging around the slums of Tokyo hoping to find a capable street fighter.
Sylia uses Priss' need for vengeance as justifiable cause for her to finally confront Mason and make him pay for his crimes. After a short battle on GENOM tower, Mason manages to prize Sylia's helmet off, revealing her true identity. Sylia is then compelled to kill Mason.
Unlike the other Knight Sabers who believe that GENOM is an absolute evil, Sylia understands that they are necessary for modern civilisation. Her views on the Knight Sabers and GENOM is that the Sabers control the military boomers that go astray, allowing GENOM to invest in more productive technology.
It has been hinted that there is more to Sylia Stingray than she lets on. The boomer villain Largo was able to communicate telepathically with her, implying that Sylia's not entirely human.
2040 Version[]
Sylia's character and history are given a more depth in this version. It was revealed that all the boomers were originally created from Sylia's brain cells. The first prototype became her brother Mackie, while the second became the villain Galatea. Galatea caused the death of Sylia's father, causing her to develop a manic-depressive personality.
Sylia doesn't take as much of an active role among the Knight Sabers, preferring to control things from a distance. When Mason tries to uncover Sylia's clone Galatea, she takes the lead, only to be met with failure. Galatea's growing prescence causes Sylia to become increasingly unstable. In the final battle, Sylia stays behind, hoping to recover from her emotional scars.