Writer's Note: The outcomes of the battles will be based on voting. If you cast a vote, please try to send a private message instead of putting in a review so as to avoid the outcome being obvious. If no votes are cast, then I will decide on my own who wins.
The Tournament is Prepared
Sixteen monsters were trapped in energy bubbles, held above massive landscapes ranging from a dune infested desert to the ancient ruins of a metropolis city. Among the monsters were the spiked dinosaur Angurius, the reddish-brown Baragon, the plant/animal hybrid Biollante the cyclopean cyborg Gigan, a bidepal dinosaur named Gorosaurus, pollution-spawned Hedorah, Okinawan deity King Seesar, the spider Kumonga, the serpent Manda, the giant machine MechaGodzilla, the insect queen Megagurius, space monster Orga, the pterodactyl Rodan, Space Godzilla, Titanosaurus, and the gliding lizard Varan.
These monsters had been brought here by an unknown race of aliens. They had kidnapped and resurrected sixteen giant city-smashers, a cross-section of destructive forces ranging from large leftovers from the dinosaurs, mythical beasts, and man-made creations that had gone awry.
Several alien species sought to conquer earth by mind-controlling large numbers of monsters, but these ones had a different plan. In all previous attempts to conquer earth, the one thing that always decisively defeated all hopes of taking the blue and green planet was Godzilla, who was proclaimed the King of the Monsters. To conquer earth, a monster was needed to defeat the lizard.
These aliens only wanted one single monster, not wanting to take the risk of losing just because there was an uncoordinated rabble of beasts getting in each other's way as they all tried to fulfill the same objective. The aliens needed a single powerful monster that could go through the other monsters in a one-day battle royale. The winner of the battle (and the only living survivor) would be used against Godzilla with assistance from intelligently-manned spaceships.
The arenas were prepared, and the organizer of the tournament grinned as Angurius and Baragon were freed on a cliff-strewn plain. "Let the games begin."
Cast your vote: Angurius or Baragon!