The Starflyer is an enigmatic alien alleged by the Guardians of Selfhood to be secretly manipulating human politics and society. It supposedly arrived on Far Away aboard the Marie Celeste, a vast alien arkship that crashed into the planet long ago.
Although most of the Commonwealth is either ignorant or skeptical of the Starflyer's existence, it is revealed in the Commonwealth Saga to indeed be real, and to be the instigating agent behind the release of the Primes from Dyson Alpha and the ensuing war with the Commonwealth. The Starflyer is in fact an alienPrime that was outside of its home system of Dyson Beta when the barriers were created around the Dyson Pair. It was left to travel across the stars until it reached Far Away. When it arrived it triggered a flare in Far Away's star to send a message back in the direction of the Dyson Pair.
Humans had detected the flare in the star and out of curiosity they created a wormhole link to the system to investigate the event. It was here that the Starflyer was truly born when it enslaved those who came to its ship and used the humans in much the same way it does its motiles, to gather information on the human race.
Although it carried out this investigating without revealing itself, it was its own curiosity that became its downfall. Intrigued by the Silfen and wanting to know about them, it sent one of the humans it had enslaved, Bradley Johansson, to find out more. While travelling the Silfen paths, it came across the adult stage Silfen who freed him of the Starflyer's control. It was Bradley Johansson through the Guardians of Selfhood who revealed the intentions of the Starflyer to the human race.