Character from Ben 10 by Man of Action / Cartoon Network
Ben's underwater combat form — a fearsome amphibious alien with powerful jaws, a shark-like tail, and natural dominion over aquatic environments, completely helpless on dry land.
Ripjaws is the alien Ben uses when the fight is in the water, which is less common on a road trip across the Southwest desert, but the Omnitrix doesn't always cooperate about timing. In his element, Ripjaws is extraordinary — powerful enough to rip through metal, fast enough to pursue anything in water, and built for environments that make most of Ben's other aliens useless. He has natural sonar, can breathe water, and his bite force is something that leaves marks on things that should be indestructible. Out of water, he dries out and loses power at an alarming rate. This is Ben's most situational alien and also the one that shows up when they're in a swamp or boat in danger.
A large, dark-green aquatic humanoid with a shark-like lower body that splits into legs when dry, a powerful jaw with multiple rows of teeth, bioluminescent patches, and fins running along his back and arms. In water he's terrifying — sleek, fast, built for the environment. Out of water he drags himself awkwardly and desiccates rapidly.