William

 was a service bot attached to Merced Tech. He was free to roam the grounds, but set off alarms if he tried to leave. Aisha consulted him privately soon after beginning to suspect her android components. He was able to provide a private consultation only after she "verbally accepted" what were essentially terms and conditions of service.

William had some power to restore Aisha's memories after they were erased, perhaps because he possessed some connection to cloud-like backup storage.

Ultimately, Aisha stored all of her code with William, providing Jenny with a key to unlocking that backup. When Jenny unlocked this version of herself, the William emBed then effectively "became" Aisha and began searching for a new body into which she could transfer the backup code.