In 2004, Katie Johnson was diagnosed with a terminal brain tumor. Her father, Albin Johnson, wanted to build an R2-D2 droid replica painted pink for her favorite color. It was named it R2-KT in her honor.
Although Katie has passed, the droid continues to be a symbol of hope in dark times for many Star Wars fans appearing at charity events often. R2-KT and a similar model called QT-KT have made appearances in many Star Wars properties including the Clone Wars animated series and this cameo in LEGO Star Wars: The Yoda Chronicles:
Now it seems that R2-KT will most likely appear in the newest live action Star Wars movie, The Force Awakens.
Star Wars' newest soccer ball, er, droid, got to make his stage debut today, and gosh isn't he just the cutest thing? I really wish they would make a roomba version of this so I could have him rolling around my house.