Tiny (Earth-4678)

"Sorry, Batman. Did I forget to mention my little friend down there? Meet Tiny! Who would've thought a big fish could be so useful? Not me, that's for sure. He's like a mobile garbage truck, whatever I drop in that tank just vanishes. Poof! Problem gone."

- Penguin

Tiny is a great white shark kept by the Penguin in his Iceberg Longue to kill dissidents and enemies.