Lewis did the art this time, which is fitting, since both Darkbringer and Smiling Man were his characters.  (Incidentally, he came up with the original idea for what would become the CROSSOVERLORD.)

Here's his commentary:

"The Darkbringer, and subsequently 'what Lightbringer did to him,' occurred
in the latest completed storyline in Lightbringer. More or less
Lightbringer absorbed the light of the sun and the city and fired it all in
one concentrated burst, burning the front of Darkbringer's body as well as
his hair. At the conclusion of the storyline, the Smiling Man recruited our
dark-suited friend here and patched him up.

"Subsequently, people may notice he looks a little different here. Why?
That's for me to know and for future storylines of Lightbringer to reveal..."

You can read the aforementioned storyline here.

I like the idea of Darkbringer being disgusted by the perpetual grin of the population of Smiling Man's reality...

The Smiling Man seems to be popping up all over...perhaps even Australia. Check out this news story.