Number 23: Lancelot, Dark Knight of the Underworld

Number 23: Lancelot, Dark Knight of the Underworld was released as a promotional card for the seventh volume of the Yu-Gi-Oh! ZEXAL manga series. As an Xyz Monster, it represents a core mechanic introduced during the ZEXAL era of the franchise, designed to reflect the high-fantasy aesthetic associated with the Number monster line. These promotional cards were historically bundled with manga volumes to encourage readership and provide exclusive access to powerful gameplay assets that were not yet available in core booster sets.

The character design draws upon the archetype of the dark, armored knight, a recurring motif within the Yu-Gi-Oh! card game. While individual artists for promotional cards are rarely credited publicly, the artwork reflects the established house style of Kazuki Takahashi’s studio, prioritizing dramatic, metallic armor and aggressive posture to convey the card's offensive nature in battle. Upon its release, the card was received with interest by competitive players for its unique ability to inflict direct damage while retaining a disruptive effect that could negate the activation of other cards.