It took a lot of determination to be the last of the lambs left alive during the lamb genocide.

And that's what Billy was fighting for. Fighting to keep his remaining child left alive— Guest.

His wife was dead. He'd had to sacrifice his newborn to keep the other three of his children alive. And then those two had died. Now it was just Billy and his last child.

Billy was determined to keep them alive. He didn't want them to have to face the same fate as the rest of their kind.