Ferocious Monster

This lone "Ferocious Monster" (凶悪な怪物) attacked the Zyumans who lived on Earth in ancient times, threatening the entire planet. It was only opposed by a young whale named Cetus, whom it soundly defeated. However, with Cetus wishing to protect not only his life, but his people's and the planet's, the Earth responded to him and created both the Whale Change Gun and Cube Whale. Not only did it grant him the power to fight the monster, but it also made him the first Zyuohger, Zyuoh Whale. With his new power as Zyuoh Whale, Cetus fired the Zyuoh Final Deep Lock from the Whale Change Gun which froze the monster in place. Completely imobilized, the monster was then thrown out into space by Cube Whale.

Portrayal
This monster was portrayed by an unidentified suit actor.