Sprout (Lilo & Stitch)

Experiment 509 A.K.A Sprout is a seemingly-floral experiment that was created by Dr. Jumba Jookiba to infest a planet if it comes into physical contact with soil. As such, he has the ability to grow to a monstrous size when he's in the soil for too long, and has burrowing capabilities. However his abilities can be neutralized if he's put into a container.