Predator Dillion's voice

Lithe as a dancer it glided across the clearing to the trailhead, stooping to pick up the dead scorpion. It turned the insect over and over in its three-lingered, prehensile hand, the lifeless creature’s color fading to black as death cooled it. The alien seemed puzzled, as if it could not work out why this species man killed its own kind and other kinds. Then it cocked its hairless bullet head and began to make a low humming sound that gradually modulated into an uncanny and dead accurate imitation of a human voice. Mac’s voice.

“Dillon, over here,” sounded the eerie, chilling mimicry as it replayed the scorpion incident.

     The Predator (1987 novelization), chapter 7