* This card was the first [[Dark Synchro Monster]] to be introduced. Its [[WATER]] [[Attribute]] suggested that Dark Synchro Monsters were not just [[Synchro Monsters]] with [[DARK]] Attribute.

* Most of the Dark Synchro Monsters that have appeared have had a negative Level in direct opposition to a [[Synchro Monster]] the [[Dark Signer]]'s opponent had summoned. "Frozen Fitzgerald" was negative 5 while "[[Junk Warrior]]" was 5. "[[Hundred-Eyes Dragon]]" was negative 8 while "[[Stardust Dragon]]" was 8. "[[Zeman the Ape King]]" was negative 7, while both "[[Ancient Fairy Dragon]]" and "[[Power Tool Dragon]]" were 7.