Comics: Aya is an Artificial Intelligence created by Green Lanterns Stel and Hal Jordan . she serves as an interface for Hal's ship. She was presumably destroyed along with the Interceptor when it was destroyed by Kilowog.
Cartoon: Aya is an advanced artificial intelligence created by the Guardians of the Universe to control the ultra-warp prototype ship the Interceptor. The ship and Aya are powered by a Green Lantern Power Battery.
Aya was created by Geoff Johns for the War Of The Green Lanterns event.