From the moment the werewolves found out about Rex's existence, it tries to make a move to take him down. It almost worked a couple of times, cornering him to the brink of death, but he survived and came out stronger than before.
Humans sheltered him through his adolescence in power.
As for the werewolves who wanted him dead, they could only be patient and wait for their chance.
Despite suffering losses against the fake werewolf, despite the sorrow, the werewolves remained patient.
It was a trait of the hunter to be patient and wait for the perfect opportunity to strike.
That chance soon came as Humans finally realized what he truly was and made him an outcast.
However, by then, it was already too late for the werewolves.
Rex already has fangs and claws of his own.
