Variant

Though there are many types of Monsters in the series, sometimes certain monsters gain additional benefits, that separates them from the rest of their species, which are generally beneficial.

Variant (亜種)(バリアント)
A Variant can be considered a mutation of the normal Monsters. Variants tend to be blessed with protection of Gods or Demigods which, depending on the Divine Being that gave the Blessing, is capable of giving the Monsters special skills or improved defense against a certain element. However such Monsters are considered to be quite rare. Monsters become Variants upon Ranking Up, after clearing certain conditions. Physically, their most notable difference from a normal monster of the same kind would be differently colored skin, which is a sign of the blessing.

Known Variants

 * Mi - Dhampir → Vampire Noble
 * Kichi - Ogre → Minotaur

Rare Species (希少種)s
Rare Species are considered rarer than either a variant or subspecies, and are thought to be even more powerful.

Known Rare Species

 * Ogarou - Ogre

Other Races
There are even rarer races than those mentioned above. Currently there are some characters that have managed to achieve these forms. However, to do so, numerous difficult conditions have to be met.
 * Ex-Species (絶滅種)(エクスピシーズ)(Extinct Species)
 * Genshin Species (現神種)（ヴァイシュラシーズ）
 * Transcendental Species (超越種)(スペリオリシース）
 * New Species (新種)

Known Extinct Species

 * Rou
 * Aporou → Apostle Lord-[Extinct Species]

Known Genshin Species

 * Rou
 * Obarou → Vajrayaksa Overlord-[Genshin Species]