A Diplodocus rose from the depths of the ocean to attack the Calico crew when they were sent back in time by a falling satellite. The dinosaur almost managed to destroy its enemies, but it was stopped by Godzilla. Godzilla surfaced from the jungle to battle the Diplodocus, but once the Diplodocus saw Godzilla's fire breath, it quickly turned around and retreated.
The Diplodocus has no known abilities.
- The Diplodocus was a real dinosaur, and only ate plants in real life. And it lived in swamps rather than the ocean.