|First Appearance||Ben 10: Secret of the Omnitrix|
Protosts are a gelatinous alien species from the moon, Myceto.
Protosts are orange blob-like aliens with a pair of antennae on their head and three yellow pupil-less eyes with black stripes running down the back and sides.
Protosts appear to slightly be based on a few protist species.
Only male Protosts have been seen, so it is unknown how female Protosts look.
Powers and Abilities
Protosts have an almost liquid consistency, which allows them to stretch and morph at will, to the point where they can extend the size of their bodies.
Protosts are fairly agile and can be dangerous combatants, especially because they are virtually impossible to strike or grab.
Their morphing abilities give them the strength to overpower and destroy robots, like Vilgax's humanoid drones, effortlessly.
By forming a ball around energy weapons, they can protect others from their effects, though they can be vulnerable while doing so.
Protosts have exceptional healing capabilities, being able to regenerate from just a few cells.
Protosts can assume shapes with numerous limbs and tentacles.
The name Protost is a play on protists.