Dreams

Throughout the show, the four boys chosen to be the Tenkai Knights, Guren, Ceylan Chooki and Toxsa may be sleeping in their bed when their core brick starts to glow. Then, they will have a fateful dream that usually means something is about to happen on Quarton. So far, only Guren and Ceylan had dreams, until Toxsa experienced one involving his inability to transform into Titan Mode.

List of Dreams
Guren Nash -

Dream of battling Vilius - Episode 1 - Two Worlds

Dream of Dromus - Episode 7 - Tributon Extreme

Ceylan Jones -

Dream of battling Vilius similar to Guren's - Episode 1 - Two Worlds

Vision of Bravenwolf getting defeated - Episode 16 - Oh No, I Didn't

Toxsa Dalton -

Vision of Vilius ridiculing him for not taking the time to train in order to gain Titan Mode - Episode 10 - Toxsa 2.0