Shadow Dreadnought

Shadow Dreadnought, an ancient Shadow vessel that used to be piloted by Shadows themselves.

Dreadnoughts are well over 3 kilometers at their widest points and carry additional tentacles, which are a part of energy dissipation system.

Unlike run-of-the-mill shadow vessels, Dreadnoughts take thousands of years to mature and when done so they are the most powerful vessels of any First Ones.

(information taken from: B5Wars - Wars of The Ancients.