| Art or model | How to unlock
|
|---|
| Any playable character | Defeat "Monster Island, The Final Battle" level with that character
|
| Atorgon | Defeat "Atlantis Rises From The Deep" level
|
| Baragon | Defeat "Hedorah Terrorizes San Francisco" level
|
| Biollante | Defeat "Biollante Attacks Paris" level
|
| Destoroyah (NPC) | Defeat "Monster Island, The Final Battle" level
|
| Ebirah | Defeat "Ebirah Swamps Tokyo" level
|
| Hedorah | Defeat "Hedorah Terrorizes San Francisco" level
|
| Jet Jaguar | Defeat "Orga Thrashes Sydney" level
|
| Manda | Defeat "Atlantis Rises From The Deep" level
|
| Mecha King Ghidorah | Defeat "Mecha King Ghidorah Ravages Bangkok" level
|
| Mechagodzilla | Defeat "Cairo Is...Lost In Space" level
|
| Megaguirus | Defeat "Biollante Attacks Paris" level
|
| Moguera | Defeat "Mecha King Ghidorah Ravages Bangkok" level
|
| Orga | Defeat "Orga Thrashes Sydney" level
|
| SpaceGodzilla | Defeat "Monster Island, The Final Battle" level
|
| The Sphinx | Defeat "Cairo Is...Lost In Space" level
|