She wears a safety helmet and other bike gear. She has light brown hair with two bruises on her face and is seen wearing skinny jeans with a white shirt that has the number four on it.
In "The Invitation", she is seen wearing a black and white dress suit instead of her normal bicycle shirt. Her bruises were not shown on her face.
In colder conditions, starting from "I Don't Need a Hat", she wears a black knit hat, an off-white hoodie with reddish overalls and a pair of gloves.
Handlebarb is tomboyish. She likes bicycles and doing tricks with them. She also dresses as a child and plays in a brute way, as she has many wounds. She is always willing to help anyone who also helps her, as seen in "Too Many Treasures" when she takes Craig and his friends to the Junkpile for fixing the wheel of her bicycle. It is also seen in "The Invitation" that she doesn't like wearing elegant clothes. She also does not like the Horse Girls, apparently in "The Invitation" when she mocks them several times and even fights with Mackenzie.
|1. "Craig of the Car":||Absent|
|2. "How Was Your Day?":||Absent|
|3. "The Williams Family Opening Theme Song":||Absent|
|4. "How to Map the Creek":||Absent|
|5. "Creek Kid Rap":||Appears|
- Handlebarb is dubbed by a male and referred to as a boy in various foreign dubs.
- In the first version of the Polish dub of "Too Many Treasures", Handlebarb was dubbed by an unknown male actor, but in the redubbed "Too Many Treasures" and "The Invitation", she was dubbed by Justyna Kowalska.
- In the entirety of the Brazilian Portuguese dub, Handlebarb is dubbed by a man, and characters refer to her with male pronouns (despite being inconsistently called by female pronouns several times).
- In the second season and "Trick or Creek" of the Latin American dub, she was dubbed by a man and was referred to by male pronouns. She was dubbed by a woman in the first season and remainder of the third season.