Stitch

Stitch is a blue alien genetic creation standing between 3 and 3.5 feet tall, weigh 120 lb and strongly resembles a koala, though he's 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 antennae, his claws and the three spines on his back into his body. Stitch was created by "evil genius" Dr. Jumba Jookiba , who called him "Experiment 626" .