Not to mention he wanted to learn about more ways of the dark masters, a thing that would help him even in the outer world.
"I'm here if you are free to speak back," William approached the monster gates area, to be welcomed with loud explosions and fierce battle sounds. He knew things were heated up out there, and Sloth was busy fighting alongside his team against the monsters.
William tried before to get closer, but he was stopped the moment he saw scary monsters standing on guard. Yet with Sloth and others here, he finally got a chance to break through. He just needed to cooperate with Sloth, a thing that he didn't get!
Sloth was too busy to fight right now. Hearing William's voice made him heave a sigh of relief. He was worried over William, and knowing he was alive was great news.