See, for Atton, part of the messed-up thing was looking at Sparkle, knowing he'd been the exact same way when he was 16, and trying to figure out how he'd gotten to the part where all of this seemed normal.

"I'm not the biggest Sith historian in the galaxy," he said. "But I figure the Terentateks are probably a product of Sith alchemy. The ancient Sith really liked to mess with the biology of everything around them. Tweak a few things here, suffuse a species with the dark side, and ta-da - slave species that'll be rabid against your enemies long after you're dead. Makes sure you can be a pain in the ass for centuries yet."