Mount Thunderstrox is the third episode of Season 3 of Nexo Knights, and the twenty-third episode overall. It first aired on February 18, 2017.
Jestro and the Cloud of Monstrox encounter the sculptor. He helps unleash a horde of fierce garden gnomes on Knighton. What will the Nexo Knights do against this new enemy? Will their new Combo Nexo Powers do the trick?