You are on an expedition to the Umbral Deeps with the hopes of learning more about the Void Runner civilization.

This eventually leads you into a peculiar umbral pocket universe—one that looked like an arena. From the other end, a portal of void-space opens, and from it comes a giant purple insectoid worm-like creature. It was the Thrax, the Keystone Behemoth of the Umbral Deeps.

When it sees you, it suddenly erupts with laughter.