Yes, "Down in the Caves" has a sequel being made

whats going on with onyx?

Oh
I'll think about it. He'll pop up within the series
Want me to summarize what he did in each chapter he was present?

It'd be nice to know yea

I won't mention the chapter numbers, but I'll describe the basics:

-He helped Far out in his home (a small cave) after he got shot by a Stray
-He showed him to the cave he was trying to find
-He follows him, 13, 11, 5, and Kamila to Oakland
-He watches Far battle the unknown person (the main threat)

That's basically it, but I gave them dialogue