Card Trivia:Koa'ki Meiru Guardian
- This card was one of the 3 Raging Battle preview promos released in Duelist Pack Collection Tin 2009.
- This card has a Trap Card-negating counterpart, "Koa'ki Meiru Sandman", a Spell Card-negating counterpart, "Koa'ki Meiru Wall", and a Summon-negating counterpart, "Koa'ki Meiru Overload". All four have the same ATK, DEF, Attribute, Type, Level, and maintenance cost.