Card Trivia:Gaia, the Mid-Knight Sun
- This monster appears in the artwork of "Exchange of Night and Day".
- This card´s backround artwork is identical to that of "Black Luster Soldier - Envoy of the Beginning".
- This card has a DARK counterpart: "Gaia, the Polar Knight".
- The knight himself is colored white, while his horse is black and points to the left corner, in contrast to "Gaia, the Polar Knight".
- This card and its counterpart, "Gaia, the Polar Knight", are a callback to when Yugi Muto first summoned "Black Luster Soldier" using "Gaia The Fierce Knight" as a Tribute, as well as how "Gaia The Fierce Knight" is a requirement in summoning "Black Luster Soldier" in some games. This is further supported by how both this card and "Gaia, the Polar Knight" fit the requirements for Summoning "Black Luster Soldier - Envoy of the Beginning" and "Black Luster Soldier - Envoy of the Evening Twilight".
