Two Sides to Every Coin

Two Sides to Every Coin (Japanese: 反転！善と悪) is the eleventh episode of Tenkai Knights. It first aired on November 2, 2013 on Cartoon Network in the United States.

Plot
The Corekai find the Dark Fortress, containing the stolen Dragon Cube. They then decide to attack the fortress to retrieve the cube. Beag tells the boys about what the Corekai have learned and eagerly awaits the Tenkai Knights' strategy for storming the fortress. Little do either of them know, Dromus is now equipped with a Core Corrupter that can corrupt the Corekai and turn them evil.

Meanwhile, back on Earth, Guren receives Gen's advice about "choosing the side he wants". Once Guren and the others come up with a plan, they head to Quarton and attack. Unfortunately, Dromus appears and uses the Core Corrupter on the Volt Jets and the BlasTanks, which turned them into Sky Griffins and War Stallions. Remembering Gen's advice, the Knights are able to turn their allies back to their old selves, causing Dromus to retreat. The Knights and Corekai finally retrieve the Dragon Cube. Back on Earth, Guren's computer receives a message telling he is the "key" that will awake the Tenkai Dragon.

In the episode

 * Due to the match between Japan and the Ivory Coast on the 2014 FIFA World Cup in Brazil on June 14, 2014 this episode was aired one week later.