Fern has tan-gray fur and a pink nose. Most of the time, she wears a purple blouse with yellow buttons and a collar, a bright red bow atop her head, yellow pants and brown loafers.
When sleeping, Fern wears a light purple nightgown with darker purple lines.
In winter, Fern is sometimes shown wearing a dark pink top and black skirt.
Fern's swimsuit is a purple one-piece that has a red collar.
Personality and traits
When Fern first appeared, she was shown to be a quiet and introverted character who had trouble socializing with her classmates, but in the episodes following her debut she becomes more socially active, although she still shows traces of her shyness at times. Fern is also imaginative and has a talent for writing stories and poems and is interested in reading. Additionally, she is good at playing tricks on others.
In some episodes, Fern is also shown to have a meaner side. For example, in the episode "Draw", where she takes her revenge on Francine Frensky out of proportion after she insults her, and in "Popular Girls", in which she started acting bossy after a the result of a test in a teen magazine that she took showed that she is too quiet to be noticed by others, and even flip-threw Buster Baxter to prove her assertiveness. However, in the former case she apologized after realizing she went too far, and in the latter one she admits that she didn't actually enjoy bossing others around and that she only did so because she wanted to prove that she wasn't unnoticeable like the test said she was.