Number 52: Diamond Crab King

Number 52: Diamond Crab King was released in 2014 as a promotional card included with the sixth volume of the Yu-Gi-Oh! ZEXAL manga series. As an Xyz Monster, it represents the Numbers, a central series of supernatural cards within the ZEXAL storyline that hold immense power and serve as key plot elements for the main characters. Its inclusion as a manga tie-in provided fans with a tangible connection to the duels depicted in the printed medium.

The card features an illustration by the original manga artists, maintaining the distinct aesthetic of the ZEXAL era. The design focuses on a metallic, crustacean-like creature, utilizing the unique visual language of the Number cards which often emphasize high-contrast, mechanical, or gemstone-inspired motifs. Upon release, it was noted by players for its unconventional gameplay mechanics, which allow it to sacrifice its defensive capabilities to temporarily boost its attack power, reflecting a high-risk, high-reward strategy common in the series.