Basalt

Basalt are the species that originate on Andesite.

Appearance
Basalt appear to be large, yellow crystalline-like rock monsters.

Powers and Abilities
The Basalt's home planet may be a dangerous place for humans, but they are very skilled at adapting to their environment.

Their super-human strength is good for crushing and pummeling and can manipulate earthquakes.

Weaknesses
They are crumbersome and not very fast or agile. Water is dangerous to Basalt as over time, it erodes their body and weakens their strength.

Basalt cannot swim and will sink like a stone.

Omnitrix Transformation
The Omnitrix's Basalt representative is named Rocks, who first appeared in the live-action stage production Ben 10: Power of the Omnitrix. Derrick J. Wyatt would later confirm that Rocks exists in the original Ben 10 continuity, having been unlocked and used off-screen during Omniverse.

Etymology
Basalt is a type of igneous rock.