Slimy, creepy, fast and strong, Ben 10 had a great starting roster of alien forms, but some of the original ten saw more action than others. ... Grey Matter is about 6 inches tall.

One of the weakest Ben 10 aliens, Ripjaws is an aquatic alien with a design that looks like a humanoid angler fish.When in water, his legs dissolve into a fishtail, allowing him to swim extremely ...