"Let's go, we must reach there and crush these damn things once and for all!"
The moment they heard what Sloth said, relaying the intel William told him about, they couldn't help but get more excited and hyped to go there. They weren't suicidal, but they never learned about the presence of monster gates before. Only Sloth noticed them when he was on the way towards here.
William didn't give him this task only, but another to do something about the dark master's main base. Yet Sloth knew with only one hundred masters on his side, he couldn't do it.
He decided to keep this intel hidden from them, and yet shared this with a single person, the one he most trusted after the king in the entire kingdom.
As he left with his team, William was still immersed in fighting monsters. He didn't get what happened back with the king and others as Sloth didn't send him anything so far. Yet he trusted the old man and knew how deeply loyal he was to the kingdom.