Godzilla

"The original king of the monsters, this towering behemoth was the first post-war radioactive monster unleashed upon the world. Godzilla '54's atomic-powered body was so powerful that each footprint he left was a crater seeping with lethal radiation. The infamous day that Godzilla rose from the sea to conquer Tokyo will be remembered as the beginning of the humanity's epic struggle against the reign of giant monsters."

"Born of a failed attempt by aliens from the future to destroy Godzilla in the past, Godzilla '90s is a larger, stronger version of his original form. This 'reborn' version of the original mutated Godzillasaurus ravaged an unprepared human populace with a renewed thirst for destruction. Godzilla 90's' reemergence as a monster superpower reminded all those standing in his way that the "king of the monsters" had returned."

"Godzilla is the most powerful of Earth's Defenders. Godzilla lives beneath the ocean's waves, slumbering until he is called upon to face some fearsome threat. Although he has often defended the Earth from aliens, mutants, and other external threats, Godzilla has never included "humans" in the list of things he deliberately protects. To the contrary, it is often human folly that arouses Godzilla's ire. Because of this fact, the Global Defense Force considers Godzilla to be an extremely dangerous potential adversary. Godzilla uses his atomic fire to destroy most threats from a distance, but has proved to be a fearsome hand-to-hand combatant, especially when he can bring his powerful tail into play. Godzilla's most mysterious ability may be his uncanny sixth sense, which always gives him time to travel to exactly where he needs to be."

Zilla was not seriously considered for the game due to the negative fan perception of the character during the development and release of Godzilla: Save the Earth. Would have been a part of the Mutants faction.

When reaching stage 5 of the game, the player is faced with a choice to face the resurrected King Ghidorah, via Mecha-King Ghidorah as Godzilla in his base form or as Super Godzilla. Requirements for Godzilla to change into Super Godzilla in this stage is to collect three special energy capsules marked "S". However, during this time, Mecha-King Ghidorah is causing mass destruction in Tokyo, and the research center that carries the Super Energy Bank that is another requirement for Godzilla's transformation will be on the verge of being wiped out if the destruction of Tokyo reaches 50%.

When fighting Mecha-King Ghidorah as Super Godzilla, the damage that Super Godzilla takes as oppose to the amount of damage Godzilla would take is reduced by more than half. Super Godzilla's attacks can inflict massive damage to Mecha-King Ghidorah, which means that Mecha-King Ghidorah can be defeated with minimal effort. It would be apparent at this point that Super Godzilla is superior to Mecha-King Ghidorah.

In stage 6, if the destruction of Tokyo is less than 50% despite Mecha-King Ghidorah's attacks, than Godzilla can easily become Super Godzilla simply by obtaining the Super Energy Bank produced by the research center. If the destruction of Tokyo is more than 50%, then Super Energy Bank is non-existent and the second Super X will have to be used to collect the energy needed, however, the player must stall Bagan as Godzilla while this is happening.

Super Godzilla is widely regarded as a requirement to defeat Bagan as Godzilla in his base form can take high levels of damage from Bagan's attacks, and Godzilla's offensive attacks will do little to no damage to Bagan. Bagan is seen as a difficult opponent even when playing as Super Godzilla, but one of the most easiest tactics to use against Bagan is Super Godzilla's super punch (where the player charges the attack by holding the punch button and releases the attack by letting go of the button) to heavily stun Bagan in order to activate Super Godzilla's special attacks. Damage done to Super Godzilla by Bagan is reduced by more than half (just like with Mecha-King Ghidorah) and Super Godzilla's attacks can inflict far greater damage to Bagan than Godzilla's attacks. Both Super Godzilla and Bagan have the same amount of life points which shows that the two monsters are equal in strength.