Dark Tuner monster

Dark Tuner Monsters are a new monster type that made its debut in Yu-Gi-Oh! 5D's in episode 27. Dark Synchro Monsters are Synchro Summoned by sending to the Graveyard 1 Dark Tuner Monster and 1 non-Dark Tuner Monster. The non-Dark Tuner Monster's Level minus the Dark Tuner Monster's Level must be equal to the Dark Synchro Monster's Level.

That Dark Tuner Monsters are not just DARK Attribute Tuner Monsters, but are a completely different kind of monster, identified by having Dark Tuner listed after their Type.

Unlike regular Tuner Monsters, the Dark Tuners are mostly high in Level, with the exception of "Dark Tuner Dark Ape" and "Dark Tuner - Black Goddess Witaka", due to the fact that their Levels must be subtracted from the remainder of the Synchro Material Monsters for a Negative Level. This potentially makes them much more difficult to Summon. So far, all of the Dark Tuner Monsters that have appeared have 0 ATK and DEF, with the exception of "Dark Tuner Death Submarine", and are DARK. So far Dark Tuner's have been Fiend, Insect, Beast, Spellcaster and Machine Type.

Currently, there are no Dark Tuner Monsters in the OCG or TCG, they only exist in the anime and playable in Yu-Gi-Oh! 5D's Tag Force 4. In Yu-Gi-Oh! 5D's Tag Force 4, Dark Tuners function as Tuner monsters for any card effect.