Greer

Both are part of Greer's anatomy, and they do not have independent minds or personalities- but Greer treats them like puppets, almost. Their arms are functional, and they can eat and talk.

Growl treats Bite like it's stupid, and always uses it as an excuse to break, insult, or hurt things.

Snarl is Bite's sense of reason, and represent's Greer's calmer half. Even so, it has a loud, mean bark.