Starla has medium-long dark green hair. Her outfit includes a pink skirt, a red-violet and yellow shirt, and a blue amulet.
Long ago, Starla was a member of the council of Green Gate. When their planet got into a war with a hostile enemy and it became apparent that they were doomed to destruction one way or the other of they stayed, Starla sided with Earthia's plans to have their species evacuate their planet and look for a new home.
- Starla was never named in the Japanese original version of Sonic X; she was only named in the English dub of the show.
- In "Eye Spy", Starla's eyes were shown, but in "An Underground Odyssey" and "A Fearless Friend" her eyes were covered by her hair.