The Chaos Core
Yinuo was curious about the Echoes in the first place, so she didn't miss the chance to learn more about them. It was too bad that she couldn't touch them, but taking a video of them up close should be good enough.
"Hmmm..."
However, now that she looks at them closer, she can't deny how grotesque they appear.
The Normal Echo that was standing before her was using two tentacles as legs and had two tentacle-like arms. Each of those in the disgusting color of decaying meat: dark-purplish. It had a height of around 2 meters, which was average in terms of its size.
It was fortunate that she was using a thermal and night-vision camera to record, or else it might look a lot more disgusting than usual.
Yinuo did learn from Melody that the appearance of Normal Echoes used to vary in the past and that they only began appearing in this figure about a decade ago.