Ancient (Starbound)

Ancient
The Ancient is a Non-Playable Race in Starbound. They don't die from oldage.

Biology
The Biology depends on wich Ancient you are talking about.

The Ruin
The Ruin is a gigantic, red, living lifeform. It has a orb form and is like as big as a small planet (in real-life it would be as big as the moon), with tentacles on its surface. There is also a big opening somewhere at the surface, wich is located on the background, which probably is its mouth. There are lakes of poison, which is body fluid. Jelly blob will represent sweat or also secretion. It has small yellow eyes everywhere. There are caves which has the same materials as the surface. Much deeper, there is a ceiling. Then there is a large emptiness and then you reach its brains. Somewhere at the brain location, there is its heart.

Source: Villians Wiki, by same writer

The Cultivator
The Cultivator doesn't have a physical form, it's a power, but it gets presented as a big Human alike person.