There's a reason King Shark's toe to toe with Wonder Woman and pretty comfortable. I liked the diety thing made him more than another mutant, so he is one. It's just not the smartest diety more of a savage 'god'.<br/><br/>Shark's intelligent enough to converse but pretty instinctive and savage in his behaviour as well as very sadistic and aggressive.<br/><br/>Croc's an outcast who pretty much despises humans and eats people. But he's not really 'stupid' he just doesn't have any interest in learning or being anything but an animal.<br/><br/>Grodd on the other hand is definitely extremely intelligent although like you say hateful and incredibly aggressive.