Keith Montoya is Tiana Calderon's older brother. When Tiana's contract with the Donn Whitley Company ended he took on the challenge of becoming Tiana's career manager, taking over the job from their father. He and Tiana have a good personal relationship and he knows of her supernatural abilities. In business he might sometimes wish Tiana was a bit more normal, but he accepts that despite all she still not the most difficult celebrity to manage.

Keith is 30 years old and has a family of his own with a wife, son, daughter and a labrador.