Provuscus, also known as "The Shining Man" is the Dekn of Light.
Being an ancient Dekn, he was the first one to introduce Light Manipulation to the others. Over time, he mastered it, until he was able to turn himself into a living source of light. He is able to manipulate any source of light and had blinded many Arkn during the war. He appears as a bright white silhouette to most.