Core Brick

Core Bricks (Japanese: コアブロック, Koa burokku, Eng. Translated: Core Blocks) are known to be rare devices some humans can use to travel from Earth to Quarton and turn into different avatars based on any Tenkai.

List of core bricks
Boreas' core bricks
 * Bravenwolf (owned by Guren Nash)
 * Tributon (owned by Ceylan Jones)
 * Lydendor (owned by Chooki Mason)
 * Valorn (owned by Toxsa Dalton)

Others
 * Eurus' core bricks
 * Dromus (owned by Gen)
 * Venetta (owned by Beni)
 * Beag 

Trivia

 * As shown in the Japanese opening theme, there is an orange core brick. However, when episode 27 aired in Japan, the opening theme change to promote the Tenkai Knights in their Elemental Mode, and the orange brick changed to a yellow, black and green, representing Beag.