Classic tale of darkness and evil. From Hitler to the Sith of the Star Wars universe and the Shadows of Babylon 5. No monster ever sees himself as a monster, because everyone wants to be the hero of their own stroud. So rare is the bad guy who just says "I want to do bad things." The are usually trying to build something they value, or gain power or something else of value. What makes them evil is the utter narcissism of that pursuit, and utter disregard for others or any reasonable limits: My philosophy is more important than your right to exist. What I want is all that matters, so I'm justified in killing you and taking it. It is that destructiveness and disregard for others or moral limits that define what is evil. Like in the Babylon 5 universe, we will likely discover that The Traveler is a force for Creation and/or Order. In opposition to the Chaos, "creative destruction" the Hive and the Worms of Darkness the serve represent.