Pochi

Originally a nameless slave known simply as "Dog" belonging to a man named Uusu, but became master-less after his death.

[Spoiler] She was given the name "Pochi" by Satou during the events of the labyrinth and became his slave after leaving the labyrinth. Pochi would later take up Liza's family name "Kishreshgalza" when attending school. [/Spoiler]