The D-arkers (ダーカー), known Falspawn in the NA localization, are dark creatures which travel the universe in search of planets and creatures to corrupt and consume in Phantasy Star Online 2. The enemy of ARKS, they have the ability to twist space for their own benefit; most notably, they can teleport over long distances. There are many different kinds of Darker, each with its own special traits, and each led by a particular Dark Falz. Their corrupted variation in Ultimate Quests are referred to as DA-Aberrations. When confronted with the presence of native species of any planet, Darkers will turn and fight against them and will typically triumph. Almost all Darkers have a glowing, red core which takes extra damage when struck.
By far the most abundant category of Darker, the Insect Darkers can primarily be found in the Forest, Volcanic Caverns, Desert, Tunnels, Ruins, Sanctum, and Shironia fields. Chrome Dragon, which may spawn in almost any field, is capable of summoning Insect Darkers at any time.
Many members of this category have numerous limbs, fleshy skin, and sharp appendages. A large number will spawn during the Mining Base series of quests. They are led by Dark Falz Apprentice, and all are weak to Fire and Light.
Also referred to as "Stone Darkers", the Aquatic Darkers can be found primarily in the Tundra, Skyscape, and Ruins fields. Members of this category have tough shells and face-like patterns on their bodies. They are led by Dark Falz Elder, and all are weak to Bolt and Light.
Also referred to as "Bird Darkers", the Winged Darkers can be found in the Quarry, as well as all three fields of Wopal: Coast, Seabed, and Facility. Members of this category have feathers, wings, and beaks, though some take after bats moreso than birds. They are led by Dark Falz Loser, and all are weak to Wind and Light.
Toy Darkers can be found exclusively on the fields of Harukotan: Shironia and Kuron. There are only a few members, but most of them resemble various playthings for children They are led by Dark Falz Double, and all are weak to Ice and Light.
The Dark Falz are a few people who have been corrupted by the influence of the Profound Darkness and their extreme negative emotions. [Elder], [Loser], and [Double] each have a combat form, while all four Dark Falz have a giant form. Each one is weak to the same elements as the Darker type they lead.