Phoebe is described as being "a tiny girl with a cherubic face". She has long, light-colored (possibly blonde) hair, pale skin and three freckles on each side of her face. She wears at least one article of clothing that is either torn, dirty, too big, or too small for her size.
Phoebe is mischevious and rather sensitive. Out of all the Irregulars, Phoebe is possibly the nicest.