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- This card is loosely based on Oberon, the king of the fairies from William Shakespeare's "A Midsummer Night's Dream." And in this story, Oberon's wife is Titania.
- Truesdale is the family name of the Yu-Gi-Oh! GX characters Syrus and his older brother Zane in the dubbed version.
- "Fairy King Truesdale" appears in the artwork of "Oberon's Prank".
- This card's effect changed when it was errata'd. However the actual effect still remained the same in some video games, causing confusion.
- Oddly, despite this card being a "Fairy King", it is a Plant-type monster, rather than a Fairy.
- This is most likely because the Fairy-type is referred to as the "Angel"-type in the OCG.
- This card has a Xyz Monster counterpart "Fairy King Albverdich"
- These two monsters have similiar Atk and DEF with Albverdich having 100 more attack and 100 less defense
- These monsters have similiar effects with Albverdich effecting non-earth type monsters and Truesdale effecting only plants, Albverdich also decreases attack and defense by 500 points and Truesdale increases attack and defense by the same amount
- These two monsters have similiar Atk and DEF with Albverdich having 100 more attack and 100 less defense