Card Trivia:D/D/D Knowledge King Tomb Conquistador
- This card is one of the few "D/D/D" monsters appearing not to be based on a historical person.
- It may be based on the first king of Portugal, Dom Afonso Henriques, nicknamed "O Conquistador". Also, "Dom" (Portuguese honorific for kings and noblemen) sounds very close to トゥーム (Tomb) in this card's name, so it may be a wordplay.
- "Conquistador" means "Conqueror" in both Spanish and Portuguese.
- This card's Japanese title (Shikeiō) is a reference to the business title of CKO or Chief Knowledge Officer.
- This card is the only "D/D/D" monster not to be released in the OCG/TCG.
