Behind him are powerful people that made him trembled just thinking who they might be. They didn't show their face because they wore robes. They have descended down to this floor to watch the battle for the Title.
Original owner 101 felt as if he was standing close to a sun with the amount of the power that cracked in the air. He even avoided looking at them directly even though their faces were blurred by great magic.
There are hundreds of them and who know things...and beings hidden among them? There's a reason they are in the operating room though, the room provides a kind of power for everyone there– it let them watch the thousands of fighting at once and process it as normal.
That's how he's able to monitor the battle himself. He opened his mouth to say something a voice rang out and he snapped his mouth shut.