Polymorph

Polymorphs (a word meaning "many shapes") are a species from the molten planet of Viscosia.

Polymorphs are gelatinous, mucus-like, light-green, weighting 200 pounds, extra-terrestrial blobs. Goop uses an anti-gravity disc, which is a ufo-like projector to keep him together on planets with gravity differing from that of Viscosia or other planets with similer gravity. Polymorphs do not naturally have anti-gravity projectors, they are for Polymprphs that travel to planets with stronger gravity then Viscosia. The slime is normally in a humanoid shape with a pointed head, narrow eyes, and "spikes" on their shoulders. They can revert to a puddle, a shapeless mass, or mimic the shape of something. Polymorphs have strong digestive acids, which can be used as an offensive weapon, either by smothering something or releasing a sort of corrosive gas. Polymorphs with the anti-gravity disc can control it from afar and use it as a weapon.

It is unknown if Polymorphs on Viscosia have any weaknesses at all, because they can't be psysically hurt, they might be able to be killed with energy like electricty or something. It is also unknown if Polymorphs without the anti-gravity disc can talk, because it's confirmed that Goop's voice comes from the anti-gravity disc.

It has been confirmed by Dwayne McDuffie that Polymorphs come in all different colors. See here. Polymorph's used to live on a different planet but it got destroyed, so they went to live on Viscosia.

Notable Polymorphs

 * Goop