What is the name of the 96 cm. tall blue and white droid that appears in all six of the original Star Wars movies?

Explanation

The droid R2-D2 hails from the peaceful world of Naboo, where it had served Her Royal Highness aboard her spaceship before the invasion of the planet. Later on, it serves different purposes in each of the six original movies. R2-D2 is a 96 cm. tall blue and white droid filled with a multitude of different tools. It communicates with electronic noises. R2-D2 is a fictional character in the Star Wars universe.