Board Thread:Questions and Answers/@comment-5336393-20190112224429/@comment-31829564-20190123202627

MemoryAngel wrote: Although many argue with me on this, I believe that Darkness (the power to corrupt and create walls and spheres of impenetrable shadow, which the Overlord supposedly uses) and Destruction (the power the Oni supposedly have, and the power Garmadon uses to attack Lloyd) are the same.

Here's why; Destruction can do what Darkness can (make impenetrable shadows, as shown by Mistake) and more. The only difference, is that Darkness can corrupt people. But I disagree once again with that notion, as the DESTRUCTIVE blood of the Oni, once awakened, turned Garmadon into an evil monster.

And as for your question, in my opinion, Destruction (once again, in MY opinion is the same as Darkness) is shared by both the Oni, and the Overlord. I always thought that Darkness was a more powerful version of Destruction, kind of like Golden Power and Creation, but this also makes sense.