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Mothra, Guardian of the Cosmos

Mothra 1961 poster
  • Pantheon: Japanese Mythology
  • Deity Title: Mothra, Guardian of the Cosmos
  • Deity Symbol: A stylized image of Mothra’s wings
  • Home Plane: The Cosmos
  • Deity Level: Lesser deity
  • Alignment: Chaotic Good
  • Aliases: The Protector, The Divine Moth, The Great Goddess
  • Superior: None
  • Traditional Allies: Godzilla, Rodan, King Caesar
  • Traditional Foes: Ghidorah, Gigan, SpaceGodzilla
  • Divine Artifact: The Cosmos Talisman, a gemstone that grants the user incredible powers over the elements.
  • Servants: The Shobijin, two tiny twin priestesses who act as Mothra’s human intermediaries.
  • Servitor Creatures: The Mothra Larvae, small caterpillar-like creatures that act as Mothra’s messengers.
  • Sacred Animal: The moth
  • Manifestations: A giant moth-like creature with shimmering wings and the ability to control the elements.
  • Signs of Favor: A sudden gust of wind, a beautiful butterfly landing on the worshipper’s hand, a feeling of warmth and safety.
  • Worshipers: Environmentalists, defenders of the natural world, those seeking protection and guidance.
  • Cleric Alignments: CG, CN
  • Specialty Priests: Divine Guardians, Elementals, Wind Dancers
  • Holy Days: The Spring Equinox, Mothra’s Day of Awakening
  • Portfolio: Nature, the elements, protection, guardianship
  • Domains: Life, Nature, Tempest, Protection
  • Favored Weapon: The staff
  • Favored Class: Cleric
  • Favored Race: Elves
  • Duties of the Priesthood: Protecting the natural world, preserving the balance of the elements, acting as stewards of the environment.
  • Major Cult/Temple Sites: The Island of Infant Island, the sacred mountain of Rolisica, the Forest of the Elementals
  • Benefits: Divine spellcasting abilities, resistance to elemental damage, the ability to summon and command Mothra’s messengers, increased connection to the natural world.

Mothra, the Guardian of the Cosmos, is a gargantuan moth-like creature that has been revered as a divine being by many civilizations across the globe. Born from a sacred egg on the mystical Infant Island, She has existed for thousands of years, seeking to protect the balance of nature and defend the innocent from the forces of evil.

As a character, She is a noble and benevolent being, with a deep sense of compassion for all living creatures. Despite her immense size and power, she is gentle and nurturing, often coming to the aid of humans in times of crisis. Her love for the natural world and her desire to protect it from harm are the driving forces behind her actions.

Mothra’s ultimate goal is to maintain the harmony of the universe, ensuring that all living beings can coexist peacefully. To achieve this, she has often found herself in conflict with those who seek to exploit or harm the environment, as well as malevolent creatures that threaten the balance of power in the cosmos.

She is a gargantuan moth-like creature with iridescent wings that shimmer in the light. Her body is covered in soft, white fur and she has large, expressive eyes that convey a sense of wisdom and compassion. Her legs are long and slender, and end in sharp talons that she can use to defend herself when necessary. When she spreads her wings, Mothra’s impressive size and majestic beauty are truly awe-inspiring.

Despite the dangers she faces, Mothra remains steadfast in her mission to protect the innocent and defend the planet. With her immense strength, magical powers, and unwavering determination, she has become a symbol of hope and resilience for all those who seek to live in peace with the natural world.

Mothra, Guardian of the Cosmos


Gargantuan monstrosity, chaotic good

Armor Class: 26 (natural armor)

Hit Points: 800 (40d20+400)

Speed: 60 ft., fly 120 ft.

STR 30 (+10) DEX 22 (+6) CON 30 (+10) INT 25 (+7) WIS 28 (+9) CHA 27 (+8)

Saving Throws: Dex +14, Con +20, Wis +17, Cha +16

Skills: Perception +17

Damage Resistances: fire, lightning, radiant

Damage Immunities: psychic

Senses: darkvision 120 ft., passive Perception 27

Languages: telepathy 120 ft.

Challenge Rating: 28 (120,000 XP)

Legendary Resistance (3/Day): If she fails a saving throw, it can choose to succeed instead.

Magic Resistance: She has advantage on saving throws against spells and other magical effects.


Multiattack: Mothra can use its Frightful Presence. It then makes four attacks: one with its bite, two with its claws, and one with its wings.

  • Bite: Melee Weapon Attack: +20 to hit, reach 30 ft., one target. Hit: 36 (6d10+10) piercing damage.
  • Claw: Melee Weapon Attack: +20 to hit, reach 20 ft., one target. Hit: 30 (4d8+10) slashing damage.
  • Wings: Melee Weapon Attack: +20 to hit, reach 60 ft., one target. Hit: 24 (4d6+10) bludgeoning damage. Mothra can choose to create a powerful gust of wind that knocks all creatures within 30 feet of it prone, or to create a line of wind that deals 60 (12d10) slashing damage to creatures in its path. Creatures caught in the wind line can make a DC 24 Dexterity saving throw to take half damage.

Frightful Presence: Each creature within 240 feet of Mothra and aware of it must succeed on a DC 24 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Legendary Actions

Mothra can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Mothra regains spent legendary actions at the start of its turn.

  • Wing Buffet: She uses its wings to create a powerful gust of wind that pushes all creatures within 30 feet of it back 20 feet.
  • Healing Light: She heals itself or one ally within 120 feet of it for 60 hit points.
  • Psionic Blast: She targets one creature within 120 feet of it with a blast of psionic energy. The target must make a DC 24 Intelligence saving throw, taking 60 (12d10) psychic damage on a failed save, or half as much damage on a successful one.


Reflective Scales: When Mothra is targeted by a spell that requires an attack roll, it can use its reaction to roll a d6. On a 4 or higher, the spell misses Mothra and instead targets the caster or another target of Mothra’s choice within range.

Lair Actions

On initiative count 20 (losing initiative ties), Mothra can take a lair action to cause one of the following effects:

  • Radiant Burst: Mothra unleashes a burst of radiant energy that fills the area with bright light in a 120-foot radius centered on Mothra. Each creature in the area must make a DC 24 Constitution saving throw, taking 60 (12d10) radiant damage on a failed save, or half as much damage on a successful one.
  • Summon Larvae: She summons 1d4 giant moth larvae to fight alongside it. These larvae act on Mothra’s initiative count and disappear when Mothra dies or dismisses them as a bonus action.
  • Protective Barrier: Mothra creates a protective barrier that grants itself and any allies within 60 feet of it resistance to all damage until the end of Mothra’s next turn.

Regional Effects

The region within 1 mile of Mothra’s lair is warped by its presence, which creates the following effects:

  • Divine Presence: Mothra’s presence causes the area to become imbued with divine energy. Any spells that deal radiant damage within the area deal an additional 1d6 damage.
  • Benevolent Aura: Mothra’s chaotic good alignment affects the area, making it a place of tranquility and safety. Creatures within the area cannot be charmed or frightened and have advantage on saving throws against effects that would cause them to become charmed or frightened.
  • Giant Moth Swarms: Mothra’s presence attracts giant moth swarms, which are neutral towards creatures that do not threaten them. These swarms can be tamed or befriended by creatures that gain their trust, and can be used as mounts or allies in combat.


Mothra, the Guardian of the Cosmos, has been soaring through the skies since time immemorial. Her purpose is to protect the balance of nature and the well-being of all living beings. It is the 1450s, and she has been watching with concern as humans continue to expand their reach and encroach upon the natural world.

As she glides over lush forests and sparkling oceans, Mothra sees the changes wrought by human civilization: clear-cutting of forests, pollution of the air and water, and the extinction of many animal species. She knows that something must be done to restore balance to the earth.

She has been working behind the scenes to guide human leaders and thinkers towards a more harmonious relationship with nature. She whispers to the hearts of those who will listen, urging them to consider the long-term impact of their actions on the planet.

Recently, Mothra has been drawn to a group of explorers from Europe who have arrived on the shores of a distant land. These newcomers are curious and adventurous, but they also bring with them a destructive force that threatens to upset the delicate balance of the ecosystem. Mothra has been observing them closely, and she is preparing to make her presence known.

With a graceful flutter of her wings, Mothra descends from the sky and lands before the European explorers. She does not speak, but they can sense her message: they must respect the land and its inhabitants, and work together to protect the natural world. Mothra remains with them, a silent and powerful force of nature, reminding them of their responsibility to the earth.

As she watches over the explorers, Mothra knows that her work is far from done. But she is patient and steadfast, knowing that her message will eventually be heard by all those who inhabit the earth. Her ultimate goal is a world where humans live in harmony with nature, a world where the delicate balance of life is preserved for generations to come.

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