Jackie Lynn Thomas from Star Vs the Forces of Evil She is a student at Echo Creek Academy, the school colors are Yellow and Red. Her name may be short for Jacqueline. The pin on her jacket may be a french flag turned upside down. It's cannon that the aqua streak in Jackie's hair is natural, even though she didn't always have it. Disneypedia: "Jackie is a laid-back and kind girl who is shown to enjoy and have a talent for skateboarding. She is shown to like weird things, especially when Marco had a monster arm. She does not get angered easily and at most is only mildly disappointed when something does not sit well with her. It is implied, at times, that she can be something of a trouble maker. While not malicious, she will get into trouble if the situation is presented to her in an enticing way. She is also shown to be very understanding and forgiving of others and is also observant such as when she realized that Marco still cared about Star and his adventures with her on Mewni." - LisVi