Critter - Batman: Arkham Knight (2015)

Roach wrenched against his restraints, and watched the beetles skitter across Scarecrow's gloved hand. He wasn't sure what made him sicker: Scarecrow's creepy new face. Or the rocking of the damn cargo container they were hidden inside. Joker wouldn't find him, surely? They couldn't have gone far from the Steel Mill.

"Fascinating creatures, aren't they?" Scarecrow said. "So small." Scarecrow was holding a bug by one of its legs, now, as the other five limbs scrabbled at the air. A wave hit the boat and the poor thing swung back and forth. "No warning colours, either." He dropped the bug to the floor, it scuttled towards Roach who fought back to the urge to stamp on it. He didn't want to look afraid.

"Do they want their predators to fall for it?" Scarecrow asked, watching another insect creep across his palm. "To sink their teeth into this fragile shell?"

Scarecrow made a fist, crushing the insect in his hand.

"The beast that does so will regret it," Scarecrow explained, wiping the mashed up insect into a glass beaker. "Not through sickness, or death." He added chemicals to the beaker now, muddling the mixture into a greenish-black, sludgy cocktail. "But through the hallucinations this creature's toxic secretions cause. Through the beating of their overworked heart, the adrenaline coursing through their bloodstream. Through fear."

He turned to Roach now, the beaker in one hand. A funnel in the other.

"My toxin failed me at Arkham. Together, we will ensure that never happens again."