I was thinking that the blackwater's side effect is turning its drinkers into half breeds. So the half breeds are former Knights and the current Knights will eventually become half breeds. Thus the lycan feet shape in the logo. Knights hunt lycans and become lycans hunted by Knights.
Spoiler for Hidden:
Actually, I'm pretty sure that link was already established. I remember reading a while back that the black water is tied to the lycans. The implication being that continued exposure has a negative consequence and that consequence is turning into a monster.
