Opal- Disabling Foaly's Traps

  “We’ll see about that, baboon face,” said Foaly, activating a switch, that sent an infrared signal to a receiver in the floor. In half a second, a secret membrane of plasma would warm up. Half a second later a neutrino charge would spread across the plasma gel like wildfire, bouncing anyone connected to the floor off at least three walls. In theory.

  Cudgeon giggled delightedly. “Don’t tell me. Your plasma tiles aren’t working.”

  Foaly was flummoxed. Momentarily. Then he lowered his hooves and gingerly pressed another button. This one engaged a voice-activated laser. The centaur held his breath.
...
  Foaly thought. Who could it be? Who could beat him at his own game? Not Cudgeon, that was for sure. A techno fool if there ever was one. No, there was only one person with the know-how to deactivate the booth’s safety measures.

  “Opal Koboi,” he breathed.

  Cudgeon patted his head. “That’s right. Opal did a little reprogramming during the upgrading work. And the funny thing is, the Council footed the bill.

-The Arctic Incident, Chapter 8