Jas'yyl is a female Umbaran Disciple in the Dark Lords of the Sith. She is the current Sith apprentice of Darth Maziel. Unlike most Umbarans, she has long black hair. This is due to the fact that her mother was a Human. Her skin is a frighteningly pale whitish hue, and she has covered the majority of her body with black tattoos in an attempt to cover heavy scarring. Since the shadowy planet of Umbara witnesses an eternal twilight, her eyes are well adjusted to dark settings, being able to see in ultraviolet (below 300 nanometers). She also has the ability to read, subtly influence, and in some occasions, control the will of others.