The Godzilla series is a kaiju franchise made by Toho. It features Godzilla, Rodan, Mothra, King Ghidorah, and many others. Like most franchises, Godzilla has a several different continuities and spawned many comics,mangas, games, TV shows, etc., so, the canon can be confusing.
The OP should specify which incarnation of Godzilla you are using.
Main Timelines of the Series
Power of the Verse
Godzillaverse is considered to be incredibly powerful, with many monsters and Alien Races being easy planetary threats and some being potential planet busters and star busters, while all the monsters are obvious physical powerhouses there are several broken abilities including Time Travel, Spatial Manipulation, Transmutation, Teleportation, Soul Manipulation, Telepathy, Precognition, Resurrection and Life-Force Absorption. Several monsters (such as Showa King Ghidorah) are confirmed to have FTL flight speed.
Godzilla himself has several impressive Feats such as reacting to and shooting a comet carrying Monster X/Kaiser Ghidorah while it was still in space, tanking an absolute zero blast, surviving as nothing but a beating heart, and moving the Earth's tectonic plates from the indirect force of Heisei Godzilla and Larva Battra's battle.
Now Godzilla will be accurately known as the beast he is.
Supporters and Opponents of the Series
Mothra and Associations
Introduced in Showa Era
Introduced in Heisei Era
Introduced in Millennium Era
MonsterVerse (Legendary continuity):
- King Kong (Legendary)
- Skull Crawlers
- Mother Longlegs
- Mire Squid
- Sker Buffalo
- Spore Mantis
- Mothra (Legendary)
- Rodan (Legendary)
- King Ghidorah (Legendary)
Animated Series Continuities:
- Hanna Barbara continuity
- Godzilla: The Series continuity
- Godzilland: Anime continuity
- Marvel Comics continuity
- Dark Horse Comics continuity
- IDW Publishing Comics Continuities:
1. Godzilla IDW MAIN continuity (Kingdom of Monsters + Ongoing + Rulers of Earth)
2. Godzilla: Rage Across Time continuity
3. Godzilla in Hell continuity