Card Trivia:Number 91: Thunder Spark Dragon

"Number 91: Thunder Spark Dragon":

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• This card is the second "Number" to be revealed only in the manga version of Yu-Gi-Oh! ZEXAL, the first being "Number 50: Black Corn".

• The manga version of this card is the first Xyz Monster to require 5 Xyz Material.
  • This card is the first Xyz Monster to have the number of Xyz materials changed for its summoning requirement when it's released in real life.
    • This is also the first Xyz Monster that's summoned with less Xyz materials than necessary to activate its effect.

• This card carries the name of its owner, Thunder Spark.

• This is the first Xyz Monster that requires more than two Xyz Materials to activate its effect.

• This card looks like a mix of an electric eel and a dragon.
  • This card also resembles "Lightray Daedalus".

• This monster resembles "Blue-Eyes White Dragon" in many ways:
  • Both have similar heads.
  • Both are Dragon-Types.
    • Also, this card's eel-like design may hint that it has not fully evolved into its dragon form.
  • Both control lightning.
  • This card's first effect is similar to "Burst Stream of Destruction".

• This monster resembles also "Thunder End Dragon" in many ways:
  • Both have similar effects.
  • Both control lightning.

• This card was the third "Number" Yuma has obtained in the manga, if not counting "Number 39: Utopia" as the first. In anime, it was "Number 83: Galaxy Queen".

• This card is almost like a "Lightning Vortex" made into a monster. This is due to both cards having similar effects and the fact that both cards have a Lightning-related theme.

• The number 91 can be seen on the left side of this monster's head.