For trivia pertaining to this monster's Number, see Forum:"Numbers" Xyz Monster Trivia. Any contributions regarding this type of trivia should be placed there, instead of this page.
- "Kurāgen" in this card's Japanese name is a portmanteau of "Kurage", meaning "jellyfish", and "Kraken".
- This card's sealed form resembles a polyp.
- This card's effect is based on the transdifferentiation process of the Turritopsis nutricula, which is also known as the "immortal jellyfish".
- This card is essentially a "Number" version of "Kragen Spawn".
- This card is the only Fake Number that is not part of an archetype other than "Number".