KC is a feminine name of Irish origin and a shorthand version of Casey, not Kansas City. Meaning "vigilant," the original KC may have taken inspiration from the Teenage Mutant Ninja Turtles' resident vigilante, Casey Jones. Casey was voiced by a number of Hollywood stars over the years, including Chris Evans, Josh Peck, and, most recently, Haley Joel Osment. A more modern example of KC would be KC Undercover, a Disney Channel series following a high-school math genius, KC Cooper. She uses all her cunning, guile, and attentiveness to remain secretly undercover while still attending school. Baby KC can revel in the vigilance and bravery of KC Cooper as they follow along with her adventures.