Jewel Ghoul's boss fight opens with him striking a pose where he holds one hand in front of his chest and points the other at the viewer while leaning back. This plus his outfit – a bright, colorful zoot suit – references a shot of Daffy Duck from the 1946 Looney Tunes short "Book Revue". Meanwhile, the smaller versions of himself used as flunkies appear to be modeled on another zoot suit worn by Tom in the 1944 Tom and Jerry short "The Zoot Cat". The juxtaposition of these references appears to nod to an internet meme which portrays these renditions of Daffy and Tom as JoJo's Bizarre Adventure characters, owed to their bright outfits and stylized poses unintentionally paralleling JoJo author Hirohiko Araki's distinctive art style.