Cerebulon

Cerebulon is the final boss in the PS2 game "War of the Monsters", and the main antagonist of the game's story. It was also its mothership's alien fuel that mutated many different beings on Earth, creating the kaiju monsters in the game in the first place.

Origin
Little is known of its backstory, other than it is superior to other beings in technological advancement, and it had traveled far across the cosmos (presumably with Zorgulon) to either take over or destroy other planets then later set their sights on Earth.

Appearance
Cerebulon's true body has long arms that end in scythe-like daggers, and instead of legs it uses several tails for locomotion. Its mouth ends in a proboscis with sharp teeth, and five eyes on its face, one much bigger than the rest at its center. Behind its "mouth", it has a set of gills to breathe, and its head looks like a human brain.

After being defeated however, Cerebulon's head explodes to reveal a insect-like creature mirroring a spider or scorpion, with its abdomen resembling the brain. This form is unable to fight and easily scared off.

Abilities
Cerebulon itself is capable of fast-slicing attacks and able to shoot lasers from its eye. He is also very clever, able to anticipating its opponents specialized abilities and countering them fairly easily. In spite of this it mostly fights first in its mechanical suits: its larger suit able to release a death ray onto his opponents, and its smaller suit capable of releasing a high voltage attack.