- This card's name is a reference to the Unukalhai, the brightest star in the constellation of Serpens, with an apparent magnitude of 2.63. This card's relation to "Shaddoll Squamata" could allude to this fact.
- The Serpens Caput portion of the constellation Serpens appears in the artwork of this card, with Unukalhai's location in said constellation denoted by an encircled star.
- This monster appears in the artwork of "Curse of the Shadow Prison".
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