Ionyx Monster

An Ionyx Monster (Japanese いおにくすモンスター Ionikusu Monsuta) is a form of  type featured predominantly in Yu-Gi-Oh! UnION. Their coloration can be compared to that of Pendulum Monsters, with a gradient consisting of an orange base (like an ) and a light blue top. In Yu-Gi-Oh! UnION, Ionyx Monsters are said to be the result of dissimilar souls colliding to create the true future.

Ionyx Monsters are kept in the Extra Deck at the start of the Duel, and before they are Summoned. Ionyx Monsters cannot be Special Summoned from the Extra Deck except by an Ionyx Summon, under normal circumstances. Furthermore, after they are Ionyx Summoned from the Extra Deck, Ionyx Monsters can then be Special Summoned from the, or be Special Summoned if they are , under normal circumstances.

During an Ionyx Summon, the player adds the of a Positive Monster they control to that of a non-Charged Monster they control, then subtracts the Level of a Negative Monster they control from that total. At this point, if the Level of the desired Ionyx Monster in the Extra Deck equates to the result of the aforementioned calculation, the player may, at any point during his / her whilst the  is open, declare an Ionyx Summon of that monster in the Extra Deck. After the Summon is declared, the player sends the involved non-Charged Monster to the Graveyard, and simultaneously sends the Charged Monsters involved face-up to the Particle Zone in any order they choose. When this has been fulfilled, the player can Ionyx Summon the Ionyx Monster in either face-up or face-up. At this point, the opens, and play continues as would be the case for any inherent.

Many Ionyx Monsters have a close interaction with the cards in the Particle Zone, and vice versa. For example, cards such as "Ion-Eyes Catalys Dragon" pay the costs for their effects by manipulating the number of cards in the Particle Zone, in this case by sending them to the Graveyard. Similarly, cards in the Particle Zone may offer certain abilities whilst they are located in said Zone; however, only the top card in the Particle Zone may have any effects enabled, and only the top card can be manipulated by external effects unless dictated otherwise.

In Yu-Gi-Oh! UnION, Ionyx Monsters are pivotal to the story. Although most duelists in the series use Ionyx Summons, several major characters use an upgraded form, dubbed Duonyx Summoning, to Summon certain monsters. However, this 'upgrade' simply relates to the physical strength of the Ionyx Summon itself, and is otherwise identical to Ionyx Summoning. Similarly, a Duonyx Summon is simply a colloquialism, and is still treated as an Ionyx Summon.