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For trivia pertaining to this monster's Number, see Forum:"Numbers" Xyz Monster Trivia. Any contributions regarding this type of trivia should be placed there, instead of this page.
- This card derives its name from Rhongomyniad, a spear that belonged to King Arthur.
- This is the first "Heroic Champion" "Number" monster.
- This is the first "Number" monster released in OCG Series 9.
- This card can be seen as a counterpart to "Heroic Champion - Excalibur".