Gaia

Gaia (voiced by Whoopi Goldberg and Viola Davis) is the Spirit/Goddess of Earth. She is introduced in the first episode, A Hero for Earth. She is the third character to be seen or introduced, after Hoggish Greedly and his sidekick, Rigger.

Though Gaia looks after the Planeteers and obviously views them as children to her mother-like figure, she rarely gives them personal advice. She treats them as a team, warning them to be careful and to take care of one another and work together. She often watches over them and contacts them as they are leaving Hope Island in the geo-cruiser.

In the first episode, A Hero for Earth, it would appear that Gaia has a soft spot for Ma-Ti, treating him with gentle affection. This may be because he is the youngest, but she also makes it clear that he has the most important power of all, and without him, the other Planeteers have no cause. In "There is No Place Like Home" episode, Dr. Blight referred her as "Empress Earth".