Stitch is the name of the genetic experiment 626, a fictional alien, and one of the two main characters of the Lilo & Stitch film and television program. Originally created to cause chaos across the galaxy, he is marked by his short temper and mischievous behavior, traits that endear him to his friend Lilo, who adopted him as her puppy dog. He is voiced by his creator and the film's co-director, Chris Sanders.
Stitch is a blue alien genetic creation standing around 2 feet tall. He strongly resembles a koala, chinchilla or a French bulldog, as he is referred to as a dog throughout much of the franchise. He has a limited ability to change his physical appearance, as he can retract a second set of arms, his claws, his antennae and the three spikes on his back into his body.
As revealed in Lilo & Stitch, Stitch was created by "evil genius" Dr. Jumba Jookiba, who called him "Experiment 626". Both Jumba and Stitch were captured and put on trial by the United Galactic federation.
626 is then sentenced by the Grand Councilwoman to life imprisonment on a desert asteroid and Captain Gantu (who despises him) escorts him. Stitch escapes and crash-lands in Kaua'i, Hawaii. Disguising himself as a dog to hide from his captors, 626 was adopted by a little girl named Lilo, who names him "Stitch".
Read more about Stitch at Wikipedia ...
Official Site: Disney
Links: Wiki on Stitch IMDB Wiki on Lilo and Stitch Movie