Card Trivia:Subterror Behemoth Ultramafus
- This is one of the cover cards of Extra Pack 2017.
- This monster is possibly the same volcano that appears in the artwork of "The Hidden City".
- "Subterror Nemesis Archer" and "Subterror Nemesis Warrior" appear in this card's artwork (in the upper-left corner).
- This card's Japanese name, "Subterror Malice Balesash", is a reference to the Balearic Islands or the Balearic Sea, keeping with the the Mediterranean Sea theme of the OCG names of the "Subterror Behemoth" monsters.
- This card is only Level 12 Flip monster.
- This card has the highest Level and ATK of all Flip monsters.