Card Trivia:Invoked Cocytus
- This monster appears in the artwork of "Invocation".
- This card's name and Attribute are references to the Cocytus river.
- The "Invoked" designs were mostly based on Final Fantasy Summons. This monster's design is based on the summon creature Bahamut and/or Leviathan.
- "First of the Dragons" and this card are the only two Dragon-type Monsters that can directly stand up to "Buster Blader, the Dragon Destroyer Swordsman". While "Performapal Odd-Eyes Metal Claw" can be rendered immune to said Monster's effects if summoned properly, its ATK cannot be boosted.