Sylia Stingray is the daughter of Dr. Stingray, the scientist who invented the "Boomer". She also has a brother named Mackie who is 17 years old (he was a perv in the old BGC series). Her father was always obsessed with his work, and usually never spend any time with Sylia. Her mother and she remained close, and when Dr. Stingray was killed in the massive Tokyo earthquake, Sylia didn't even care :(

Sylia runs a clothing store and is also the head of the Knight Sabers. She is somewhat unstable when others talk about machines (you'll see if you watch a few episodes). She seems very social (and is) but also has a small, dark side which we don't see very often. Sylia usually never participates in combat; instead she commands the team from the base. Occasionally, we will see her fight, however.