Every squire in the order of the Chevaliers is paired with a Pegasus foal on the first day of their training. Over time, through rituals and shared experiences, the pair grow close as they are trained into an efficient and powerful duo. Pegasi have sentience, and can speak telepathically to their bonded Chevalier and communicate with one another.
If the rider of a Pegasus is killed, the Pegasus will also die. A chevalier can live without the bond formed with their companion but a pegasus cannot.