Most of the stars of The Clone Wars animated series were characters we'd already seen on the big screen. Anakin Skywalker and Obi-Wan Kenobi fought alongside Clone Troopers against Count Dooku, General Grievous, and their droid armies, Palpatine pulled the strings from the shadows, and so on. However, Anakin's apprentice, Ahsoka Tano, was created exclusively for the series. That didn't stop her from going on to become one of the most beloved Star Wars characters ever, and as well as a major part of The Clone Wars' sequel series, Star Wars Rebels.
Originally, however, Ahsoka was going to be much younger, and she wasn't really Ahsoka. She was named Ashla, and she was the apprentice to a completely different Jedi Master. As per executive producer Dave Filoni's original pitch, The Clone Wars would've starred "a band of misfit scoundrels," including Ashla and her master, who assisted the war effort on the fringes of the galaxy far, far away — a concept that sounds suspiciously like Star Wars Rebels, which Filoni also created.
There are distinct similarities between Ashla and Ahsoka, but the former is clearly a child, not a teenager, and has a girlier fashion sense. Besides, it's not like Ahsoka's look was set in stone once The Clone Wars premiered, either. The young Jedi received a makeover for The Clone Wars season three, and sports a brand new adult style — including different facial markings — in Star Wars Rebels.
