R2-KT has popped up in a number of places in the Star Wars universe. It all started thanks to Dave Filoni, who decided to feature her in a cameo in the feature length film Clone Wars. Next came toys, books, and ultimately a cameo in real-life in Star Wars : The Force Awakens.
Star Wars : Clone Wars (2008)
Star Wars : Clone Wars (series)
Star Wars Droids cartoon series
Not exactly R2-KT, but check out a mysterious pink droid that first appeared in the Droids series way back when. We had no idea this existed, but apparently the idea of a pink droid was around for some time!