Advent Beasts

Advent Beasts are mirror dimensional beasts that cause travel the worlds.

Dragoonia
Dragoonia is the first type of Advent Beasts who lives on the cities. Samuel named it Dragonizar who was tamed by himself as bonds.

Triva

 * Unlike Ryuki Rider, they were not created from Samuel's Erase Card and Yuki's drawing. Because of Power Rangers: Vent Knights, they were smaller than it's counterpart when they were big. Although Sentai counterpart summoning the Mirror Monsters, they were stayed with the Riders when they used the Vent Cards.