Dryads

Dryads are a humanoid species of extraterrestrials.

History
Franklin and his mother came to live on Earth.

Physical appearance
Though extraterrestrial, Dryads appear to be relatively humanoid in appearance.

Known Dryads

 * Franklin
 * Franklin's mother

Behind the scenes

 * In the DC comics, Dryads are a species of miniature humanoids hailing from an alternate dimension, accessible from Earth via plants. They are based on the Dryads of Greek mythology, who are tree nymphs.