Dark Synchro Monsters (ダークシンクロモンスター (formatted as
Dark Synchro Monsters are not simply DARK Synchro Monsters, but are a completely different monster category, although they are similar to Synchro Monsters. The color scheme of that is opposite of a Synchro Monster, with a dark grey card frame. In works related to Yu-Gi-Oh! 5D's, Dark Synchro Monsters function as Synchro Monsters with negative Levels for any gameplay purposes, and can thus be supported by Synchro Monster support.
In some works outside of 5D's, however, Dark Synchro Monsters are retooled a lot to make them into their own Type, including the removal of the above Summon explanation. The most major change is the lack of the ruling that states that Dark Synchro Monsters function as Synchro Monsters; as such, Dark Synchro Monsters are now completely stand-alone, requiring support for their own Type and being unable to use Synchro Monster support.
This ruling is completely optional and only applies to fan works.
Types of Monster Cards
Types of Spell Cards
Types of Trap Cards
Other Types of Card
ATK - DEF - Level - Rank - Attribute - Type
Playing Field Zones
Types of Summon
Types of Monster Effects
Types of Effect Monsters
Types of Spell Speed
Aqua - Beast - Beast-Warrior - Cyberse - Dinosaur - Dragon