The first calamity beast, or whatever the Messier 87 equivalent was called, vaguely resembled a squid with armor and way too many tentacles.
Its mass and volume was enormous. It was more than 10 kilometers in length, and its bulk was so formidable that it could probably cause an extinction event if it decided to crash onto a planet!
The creature's tentacles looked highly disconcerting. They were both flexible but also hooked. Each of these hooks looked sharp enough to bore into the hull plating of the Dominion of Man and make it much more difficult to dislodge the tentacles.
The domain of the powerful creature was even more disconcerting. Ves was only able to sense a hint of it due to Furia and Caramond's attempts to push it back, but he was able to sample enough to get a general impression.
