Card Appearances:Service Ace
- In episode 15, Harrington Rosewood uses this card during his duel against Jaden Yuki. He uses this card to make Jaden guess the card type of one card in his hand. Jaden declares Trap, but Harrington reveals that the card was a monster ("Mega Thunderball"). Because of that, Jaden takes 1500 damage. After that resolves, "Mega Thunderball" is banished. Harrington later added another copy to his hand via the effect of "The Big Server". He then activates that copy. Jaden declares Monster and Harrington reveals that the card was "Mega Thunderball". Because of that, Jaden doesn't take any damage and "Mega Thunderball" is banished.
