The Mothras (モスラ Mosura) are a twin pair of giant divine moth kaiju. The undisputed queen and prince of the monsters, these Mothras first appeared as larvae twin siblings in Godzilla vs. King Ghidorah. In Godzilla vs. SpaceGodzilla, the two evolved into their Imago stages and aided Godzilla in the defeat of SpaceGodzilla. Though one of them died, the other lived on.
The name "Mothra" is the suffixation of "-ra" (a common last syllable in kaiju names) to "moth." Since the Japanese language does not have dental fricatives, it is approximated "Mosura" in Japanese. Originally, Mothra's name was approximated in English as "Mosla," but it was later corrected to "Mothra".
In Leo's case, his name "Mothra Leo" (モスラレオ Mosura Reo) comes from a song from the soundtrack, which plays when Leo creates his cocoon. English-speaking fans began using this name to refer to Leo, and official English releases of the soundtrack used variations of this name, such as "Mothraleo" and "Mothra Reo."
In her larvae form, the Mothras are essentially the same as any Mothra's larval form.
In Lea's case, she is essentially the same as any mothra; a gigantic moth-like creature with brightly-colored wings. Similar in appearance to the Original Mothra, Lea's body is compact and rounded. Her fur is a brighter color, with most of the brown areas now colored orange. The eyes are slightly smaller and a much brighter blue color, while the antennae are shorter and thicker. This Mothra prop's legs are made to appear shorter and more bird-like.
As for Leo, after transforming into his imago form, he resembles his mother and sister's imago form, but has several distinguishing features, resembling the looks of his grandmother Rainbow Mothra as well as that of Elder Mothra. His wings are somewhat more triangular and have different designs and color schemes. His abdomen is more rounded and less defined than Mothra's. Leo also has green eyes, three beads on his forehead, and feather-like antennae, resembling those of a male moth.
Mothra Lea's chirps are actually Anguirus's roars sped up. This is most evident during a scene in Godzilla vs. SpaceGodzilla where Lea is hit by SpaceGodzilla's Corona Beam and moans in pain, emitting a sound that is almost identical to Anguirus' roar.
Leo's roars consist primarily of altered Mothra roars, which have also been modified to sound deeper and more masculine.
Despite having wrought destruction worthy of any Toho kaiju, Lea is portrayed just as any other Mothra; a kind and benevolent creature, causing destruction only when acting as protector to her worshipers on Infant Island or her egg, or as collateral damage, while protecting Earth from a greater threat. Lea is usually accompanied by two tiny priestesses or fairies (often called Shobijin—Japanese for "small beauties") who also speak for her.
However, Leo differs from his sister, mother, and most os his ancestors. Not only is he male, but also, unlike Mothra who is usually portrayed as being concerned more for the plights of her homeland and people, Leo takes on a more active role as a protector of the Earth, as well as taking on a Gamera-like affection for children.
Born during the climax of the war against King Ghidorah, Leo and Lea, along with their mother, were the last remaining members of a highly advanced species of giant moths created as guardians to the Elias, an ancient civilization of small yet powerful humanoids far older than humanity.
Godzilla vs. King Ghidorah
Leo and Lea first appeared as an egg laid by Mothra in 2012. As King Ghidorah's wrath continued on and other monsters were failing to stop him, Mothra's egg on Infant Island hatched into two twin larvae. The larvae arrived in Tokyo to communicate with their mother, but King Ghidorah noticed them. The three-headed demon fired his Gravity Beams at the larvae, only for Mothra to fly in front of the beam, sacrificing herself for her children.
Enraged with grief, the larvae attacked King Ghidorah, despite being hopelessly outmatched in his larval form. After a long battle, ending with Godzilla destroying King Ghidorah for good, Mothra's larvae swam back to Infant Island with the Shobijin.
Godzilla vs. SpaceGodzilla: Descent of Darkness
Powers and Abilities
If need be, the Mothra Larvae have the ability to change their colors, becoming virtually invisible via camouflage.
The Larvae can leap incredible distances, which allows them to strike at opponents.
Mega Breast Cannon
Mothra Larvae can fire highly explosive beams of from their chest.
SilkAs larvae, the twins can spray their opponents with a stream of silk launched from their mouths as a ranged attack (to entrap or disorient an enemy). Additionally, their spray unleashes multicolored, electrical aftershock.
Lea can fire two destrictuve beams of energy, known as Ultra-Sonic Beam from her antennae, which can cause large explosions and pierce through buildings; she can also unleash arcs of lightning from her wings, or keep it in her body to release to another through touch.
As an adult, in addition to flying at mach 8, her wings can (and generally do) create gales which tear apart buildings and send other kaiju flying. Her great bulk of a body is commonly used to her advantage in battle to slam into opponents (both in larva and adult form), and her surprising levels of strength can help her to drag and even lift monsters like Godzilla.
Mothra was able to shoot poison darts from her abdomen, but she lacked both her hurricane force winds and her poison powder.
Mothra's powder is able to redirect both energy and physical projectiles back to their original senders and also has the ability to cause a short-circuit in electronics. Mothra has the ability to counter enemy beams not only by reflecting them, but she can also use them to attack via her kamikaze attack with which she kills Destoroyah and survives.
Mothra is one of the most powerful psychics in the Toho universe. She uses this power benevolently, to communicate with humans, or defensively, to destroy her enemies. As suggested earlier, Mothra is assumed to be divine and draws many parallels to the Phoenix, which makes her one of the more powerful kaiju of the Toho universe.
Her powder acted as a cloud of mirror-like scales, which would allow beam weapons to repeatedly rebound before striking the target, effectively making them impossible to miss.
Lea's allies easily took advantage of this condition to attack SpaceGodzilla by repeatedly firing their energy attacks, allowing them to strike SpaceGodzilla over and over again, with the rebound effect negating any chance of the energy beams not hitting their target. Additionally, Lea is also able to use her scales multiple times without any loss of her ability to fly.Additionally, her final strategy is to emit "scales," a yellow poisonous powder that can usually asphyxiate an enemy. However she only uses that attack when she knows she is going to die, this is speculated, because the extreme loss of scales will cause her to lose flight.
Mothra Leo can fire three, blue-colored, explosive Cross Heat Laser beams of energy from the three beads on his forehead; Mothra Leo unleashes Jade Bolts of lightning from his wings; Mothra Leo can fire a highly explosive beam of blue energy from his chest; if necessary, Mothra Leo is able to break apart into thousands of smaller 30.5cm Mothras, which can attack opponents with blankets of explosions; Mothra Leo can perform an Excel Pileload by flying straight up and spinning to release several jade rings from his body; Mothra Leo can do release a series of cascading shafts of powerful blue energy that can split the earth as bolts flicker across his wings; Mothra Leo can perform an Excel Dash by charging himself with energy and flying at mach 85 for up to 65 seconds; Mothra Leo is able to perform a Sun Strike Buster by raining down powder in a circle, and then from the center of the circle, a giant beam of blistering emerald energy will burst forth from the sky; via creating gold energy rings and dropping them onto opponents, Mothra Leo can encase them in a levitation field which allows him to transport anything he desires; Mothra Leo can fire a beam pulser; launched from his wings, Mothra Leo can fire twin, explosive blasts of energy; Mothra emits a sparkling pileload.
In addition to being able to fly at the speed of mach 15.5, as an adult, his wings can (and generally do) create gales which tear apart buildings and send other kaiju flying. His great bulk of a body is commonly used to his advantage in battle to slam into opponents (both in larva and adult form), and his surprising levels of strength can help him to drag and even lift monsters.
By flying over badly damaged and burnt areas of forestry, Mothra Leo is able to speed the growing process of plants and return life to vegetation.
Mothra Leo can create an invisible force field around his body that is able to deflect any enemy energy beams.
Rebounding ScalesMothra Leo is able to release green powder from his wings which can reflect energy attacks as well as weaken and cause pain to his opponent.