These nine silhouettes were none other than the nine Emperor-level existences led by the Blue Emperor. There were only nine out of the original Thirty-six Emperors.
It was Merlin's first time seeing powerful existences such as the Thirty-six Emperors. True enough, they were very different from the watchman. Back then, the watchman was also a fourth-grade Emperor-level existence. The threads of the natural order that were connected to his body were completely frayed and could not be detached.
On the other hand, the ancient Thirty-six Emperors no longer had any threads of the natural order. This was because their bodies had been fully integrated with the natural order's origin and became a part of it. They could even be seen as the origin of the natural order's avatars.