Hydratron

Hydratron is a Transformer from the Aligned continuity family.

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

Hydratron is a giant robot jellyfish created by the Quintessons. Its alternate mode is a city.

Fiction

Ask Vector Prime

The Quintessons gave Hydratron to Bio Ranger Iga to be one of his Thirteen Great Demon Generals. Ask Vector Prime, 2015/06/27

Trivia

Hydratron's true form can be described as a jellyfish-like pseudopod with large multiple balloon-like sacs filled with unsavory-looking green fluid, its floating base light up in a dazzling display of colors, and streams of bright light flowed out from its star-filled tendrils.