Giant squid

Description
The Giant Squid was used by the Soviets during the Great World War III. These creatures would attack a ship from beneath wrapping its tentacles around it and crushing it. The ships had no defense against this type of attack.

There are inconsistent reports as to how the Soviets obtained the squids. Some reports state that Yuri's psychic ability was used to control them. Others say that Soviet scientist used pleasure and pain treatment to train the squids. Although after Yuri's defection from the Soviet Union the Squids continued to follow Soviet orders thus most intelligence insist that the second means was true, though some speculate that psychic ability could have been used to attract them.

Counters
The best known and most effective counter was the Allied Dolphin who were trained for the sole purpose of taking out Giant Squids. The Dolphin's sonic pulse would cause the squid so much pain that it would release ships and try to attack the Dolphin, but it would die from only a few sonic pulses so it rarely could reach the Dolphin in time.

Yuri also employed the Boomer submarine which prevented the squids from grabbing onto it allowing the submarine to easily slaughter the squids.

Usage
They were used as a line of defense for Cuba to prevent the Allies from reaching their Nuclear Silos there. They also were used to prevent the Allied from landing on Europe to reach Russia.