Card Trivia:Arcana Knight Joker
- This card requires the same monsters as "Royal Straight Slasher" to be Summoned.
- It represents the Joker in a common deck of playing cards.
- This is the only Level 9 Warrior-Type Fusion Monster that is not an "Elemental HERO" monster.
- Ironically this card has "Joker" in its name, despite it being the "Ace" monster of the Poker Knights.
- This card is one of 3 monsters to have 3800 ATK, the other two being "Beast Machine King Barbaros Ür" and "Majestic Star Dragon".
- This is the only Fusion Monster with 3800 ATK and 4 if you count the anime only Dark Guardian.