Card Trivia:Hero Signal
- "Skyscraper" appears in this card's artwork.
- This card appears in the artwork of "Trap Strap".
- This card has two counterparts: "Destiny Signal" (for "Destiny HERO" monsters), and "Neo Signal" (for "Neo-Spacian" monsters).
- The signal is based on the Bat-Signal from the DC Comics, keeping in relation with the Western comics design of the "Elemental HERO" archetype.
- This card's effect references this, as the signal lights up when there is trouble, represented by this card's effect allows the player to Special Summon an "Elemental HERO" monster when their monster is destroyed by battle.