Cetra is a fictional race from the popular video game series, Final Fantasy. They are known for their deep connection to the planet and its life force, often referred to as the Lifestream. The Cetra possess unique abilities that allow them to communicate with the planet and understand its needs, making them guardians of nature. In the game, the last known Cetra is Aerith Gainsborough, a key character who plays a vital role in the story. Her heritage gives her special powers, and she is often sought after for her ability to heal and connect with the planet, highlighting the importance of preserving the environment.