She is described as a bubbly and friendly witch, but sometimes insecure and doubtful of herself. She likes plants and gets frustrated, if she gets bad grades and when other students (or Amity) make fun of her, calling her "Half-A-Witch Willow".
Powers and abilities
Magic: Willow is adept in magic. Like many witches, her connection comes from a sac of magic bile attached to her heart. Whenever she gets mad her magic can react to her emotions and sparrow out of control. Thorns will also sprout from the ground beneath her feet.
Phytokinesis: She has powerful plant-based magic, which she uses to help restore plants and can make a tiny speed sprout humongous.
Willow was shy upon first meeting with Luz, but thanks to her, she has been able to come out of her shell more. Willow has become reliant on Luz and is shown to be slightly curious about her background. However, Willow has the discipline to know when Luz can be overbearing and tries to protect and correct her on occasion. Sometimes Willow will use Luz as a means to feel special only for her to realize that she should rely on her own abilities.
Willow and Gus have been friends for some time. While it is not known how they met, they know each other long enough that they are on good terms with one another. Willow treats Gus like a younger brother and in "Something Ventured, Someone Framed", she highly disapproved of him lying to Luz about her ban being lifted. Nevertheless, she is shown to be very protective of him.
Willow and Amity used to be best friends until they got older and Amity's powers manifested while Willow's became limited. Since then, Willow and Amity have been emotionally distant from one another. Willow has grown to feel longing for the older days and wishes that Amity would stop teasing her. Willow wants to prove that she could be just as much a witch as she can even though both of their talents are widely different. In "Understanding Willow", it was revealed that the two were almost inseparable when they were younger. Their separation was the result of the Blights refusing to have any "weak" witches be associated with them. After Amity apologizes for her actions, Willow does not consider her her friend, but acknowledges that she is trying to be better.