Senses - Angor Reborn (pg. 45)

The hairs on the back of his neck stood on end, sensing movement in the background. Jim could tell a River Troll was charging behind him, as he saw another do the same in front of him.

Bending at the knees, the Trollhunter waited until the last possible second, and then sprang into the air. His armored body jumped higher than it ever had, easily avoiding the two River Trolls. Unable to stop in time, they collided headfirst, cracking each other’s boulders.