[Damocles]

http://en.wikipedia.org/wiki/Seraphs...star_Galactica)

Hypothesis;

http://www.b5tech.org/forum/viewtopic.php?t=240

CBSG Seraphs, Shadows, Vorlons, SG1 Ancients: they all exhibit the symptoms of being Lightbulbs.

Hyperevolved beings.

As always;