Board Thread:Theories and Rumors/@comment-3410511-20180723070518/@comment-34175192-20180723071148

Otherside86 wrote: Killow and Ultra Violet are the most interesting character in the show, despite being villains. It's no question that they joined the Sons of Garmadon because of their love of anarchy. But we still know very little about them. What caused UV's insanity to begin with? Was Killow some kind of former sumo? And what is the origin of their gray skin? I look forward to them returning in Season 10. I think these things are going to be revealed in the book "Secrets of the Sons of Garmadon" or something.

But I'm not sure