Yes, that's my owner. [Colors return to him and then they shift. First to a boy with a green tunic, and blonde hair, eyes a darker blue. Then a slight shift to his form. Still the seeming same boy, but there's something different in his eyes and expression, the way he holds himself. Then to a blue tunic, to a red tunic, to a purple tunic, each time, something subtly different to the forms where it could be the same boy, but somehow...maybe also different?]

[Then he's back to his own default coloring.] Shadows don't have words. I learned to talk by copying the motions that humans do while talking. [Its also why he has a drawl.] So concepts for how it means to exist as a shadow don't really have a lot of words. I'm the one who has to figure out the description, and there isn't really a better word than owner that I can think of.

Pack isn't a bad one. At least as the way Giovanni described it. Massacre understood the concept of having an owner, but she also didn't really have a specific word beyond the description of feelings.