Casey Walker

Casey Walker is a character introduced towards the end of season 1. He is Chase's twin brother who was visiting as an exchange student from Kroutyce. He is an antagonist along with Ebony during the Descendants special, although at the end he made amends with Melissa and Chase.

Biography
Not much is known about Casey's early life. He and Chase are twins, and when their parents divorced he moved to Kroutyce with his mother. He comes to Everston as an exchange student and gets involved with the musical that is happening along with Ebony, trying to reach personal goals by almost crashing the entire musical. In the musical, he played Harry. It is revealed that Casey realized that Chase liked someone other than Ivy, and that he is doing the things he is doing to set up Chase and Melissa to be together. However, after doing some dirty tricks, Casey is unable to finish what he started and makes amends with his brother and Melissa.

In season 2, Casey is now a main character. He is shocked by the loss of his brother in the news promo, and along with that, we find out that his mother is sick and dying. Despite this, he is still trying to be strong and support her until the end while she is in the hospital. One of his mother's last wishes is for him to live with his father and learn to be happy again, so he returns to Everston and attends Chase's funeral. He tries to say something, but ends up getting emotional and hurrying outside, where he vents to Melissa what is going on. Later, blinded by grief and mistaking some of Melissa's advice, Casey plots to storm the Spero hideout in vengenance of Chase before Melissa reveals to him that Chase is still alive, in a way.