Essence Stealer.

Borus' eyes widened at the Devil grip on his hand, he released the second hand that was gripping the ablaze Hal and attempted to pry those fingers off.

Hal chuckled out of the blaze, 

"Hehe, I made him mad? No no no, he made ME mad"

With that, his grip slackened and Borus was quick to take advantage and leaped backward.

With the contact between himself and Hal broken, the flames were put out and revealed Hal, in his Lesser Devil form.

A mild stream of nightmarish dark fog swirled around his naked form.

The Flames had burnt off his clothes and his entire musculature was on display.

His hair was about four inches longer than normal and well past his shoulder now, his eyes that were now dark (sclera and all) occasionally released small bursts of fog of the same color.

Even with the distance that he had now put between them, Borus could still feel the oppressive energy that the nightmarish dark fog gave off.