At first, all he saw was an alien group of spirit masters fighting against a scary fox. He mistook everything at first, thought the owner of this place was still alive, and came to take the lives of those intruders.
But later on, he realised it was his master. He previously watched William taking out his sword and flying knives, when the folks from the other Big Seven groups came knocking on their doorsteps.
Seeing that sword, listening to the way William spoke in, made it clear in his eyes. This monster, this grand and scary fox, was in fact his mysterious master.
And as he was absorbed in his shock, watching everything that happened here, he saw how his master was going to face a tough situation thanks to this ball.
Thomas was indeed a gold grade spirit master, one who climbed ranks thanks to his effort and hard work. His life wasn't that peaceful or calm, and his ride to his current stage of power wasn't by any means a smooth sailing.
