Core Brick

Core Bricks (Japanese: コアのレンガ, Koa no Renga) 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)


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

Trivia

 * As shown in the Japanese opening theme, there is an orange core brick. This can mean that it represents Guren's core brick after gaining Elemental Mode, a new character and a new Knight, or it will just be a new Quatonian that is not owned by a human on Earth that will be revealed later in the show.
 * In the Beast world (Appearing in episodes such as Ape Knight and Scorpion) there is an orange monkey who guessingly would have that core brick