Katie Wendelson is one of the main characters on Great News. She is played by Briga Heelan. Katie is a smart, ambitious millennial with big dreams who works as a producer on the cable news show "The Breakdown." She was raised by an overly-involved mother who constantly told her that she was destined for greatness. But now, at the age of 30, Katie realizes that her plans are not as far advanced as she would like them to be and doubts her mother's assertions.