- This card was nearly useless in the TCG when it was first released, because only "Zone Eater" had been released in English alongside it with the rest of the McDonald’s Promotional Cards (“Fairy Dragon” and “Amazon of the Seas” would be released 2 years later), although it requires 3 Fusion Materials. Therefore, it couldn't be Fusion Summoned till at least one other material was released.
- This is the only Fusion Monster that is a Sea Serpent monster. However, most Fusion Monsters have at least one Fusion Material monster with the same Type as the Fusion Monster, but for "Aqua Dragon" (being a Sea Serpent), none of its Fusion Material monsters ("Fairy Dragon", "Amazon of the Seas" and "Zone Eater") is a Sea Serpent. Another monster with such oddity is "Skull Knight", which is a Spellcaster, but its Fusion Materials, "Ancient Brain" and "Tainted Wisdom", are Fiends.
- This card's name and appearance is aesthetically similar to "Water Dragon".
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