Gorgon Downing the Regenerator

“I can’t heal anyone else,” said the doctor. “Can barely even heal me. But it keeps me alive. Trust me, I’ve been trying for over a year. I’m here whether I like it or not.” He leered at them with mad eyes.
“We’ll decide what to do with him later, then,” said Stealth. “Gorgon.”
The goggles whisked open and his gaze pinned the doctor. Josh didn’t try to look away. He sank to the floor as Gorgon dragged out his life. The doctor began to twitch on the carpet.
“That’s enough,” said St. George.
Josh spasmed for a few more moments before the lenses snapped shut. Gorgon drove his boot into the fallen man’s head. “Just to be sure,” he told them.

Excerpt From Ex-Heroes, pg 394-395
Peter Clines
https://books.apple.com/us/book/ex-heroes/id585738407