Susie is the little girl in "Afraid of the Dark." During the episode she was afraid of the dark, but over the course of the episode Uncle Grandpa helped both, himself and Susie get over their fear of the dark. Unfortunately for her mother, in the process of getting rid of the fear, she ended up destroying her room. She is voiced by Tara Strong.
Susie is a small girl with large eyes and slightly plump lips. Her hair is tied into low braided pigtails and she wears a green shirt with a white lace frill on the collar, dark blue shorts, and pink flats.
Susie is a very timid/sensitive girl with a vivid imagination. This vivid imagination makes her afraid of the dark. When she is afraid, she usually calls upon her mother to protect her. However, when Uncle Grandpa helps her get over her fear of the dark, she is more than willing to take charge and face her problems head on.
After a quick survey of her room (before they shut the lights off), she seems to be interested in stereotypically girly stuff (similar to Giant Realistic Flying Tiger. She has a bunch of boy band posters and posters of cute animals all around her room. She admitted to looking up cat videos online during her free time. She also sleeps with a stuffed Beary Nice doll.
- A poster above Susie's bed shows the words "Jason Beaver" and has a picture of a beaver with a stick of wood and bowl haircut.