Phage

Phage is a female computer program who inhabits the Digital World.

Ghost in the Machine
Phage observed Sally Acorn and NICOLE on Isolated Island after NICOLE helped Dr. Ellidy escape the Digital World. She noted with particular fascination the fact that a living being could manifest in the Digital World, and that NICOLE-a digital being-could manifest a physical form. (SU: #71)

Background Information

 * Phage's name is the informal form of bacteriophage, which refers to a bacterial virus; it is derived from the Greek term phagein, which translates into English as "to devour." (Wikipedia)

Appearance
Phage's appears to wear a white feline mask with triangular ears that have red interiors, glowing yellow eyes, and a pink triangular nose. This mask is also marked by three red rings-one on each cheek and one on her forehead-that are connected to her eyes and the back of her head by three red lines. The rest of her body is an amorphous mass of black, capable of manifesting a mouth with incredibly sharp teeth.