The Steel Jellyfish only appear in the DS Version of Atlantis SquarePantis Game. They are jellyfish made of steel, and are actually easy to defeat despite their looks. Also, its attack is exactly like the Green Jellyfish
Mainly, they look like a steel iron jellyfish. Silver colored as well.
- It is a counter-part to the Green Jellyfish.
- It is unknown if it will appear in the series.