After being beaten and encrusted with Berums
by the toxic one, Dagahra, Leo landed on an ancient
temple, awaiting his foe to end the fight. Yet,
when a group of children, aided by Moll and Lora,
released the power of an ancient water spirit,
Ghogo, Leo was healed and transformed into the
powerful Rainbow Mothra. Suffused with the water
spirit's ancient magic, Leo re-entered the fray,
relentlessly assaulting Dagarha. Yet, when the
toxic one retreated below the waves, Leo followed
suit and dove under the water, transforming himself
into his new aqua form and finishing off Dagarha.
With his foe defeated, Mothra once again flew
off into the horizon, the world once again safe.
Leo's rest was interrupted again a year later,
though, by the return of an ancient foe, the legendary
King Ghidorah. Called into battle by his friends
Moll and Lora, Leo valiantly fought the King of
Terror, but to no avail, as even his extraordinary
power was not enough to penetrate the wicked king's
ancient defenses. Battered and weakened, Mothra
was forced to retreat and come up with a new plan
of attack.
Leo eventually hit on a new strategy to assault
the King of Terror. Convincing Moll to use what
was left of her powers, Mothra planned to send
himself back through time to fight King Ghidorah
when he was younger. Despite her protests, Moll
eventually gave in, and, with the help of the
triangle of wisdom, used her power to aid Leo
in his journey back in time.
Arriving in the cretaceous period, Leo quickly
located the younger King Ghidorah. Drawing upon
all of his power, Mothra assaulted the young King
of Terror relentlessly. Yet, without the power
supplied by his contact with Moll and Lora, Leo
was at a severe disadvantage against the brutal
king. Just as it seemed that King Ghidorah was
going to win, Lora managed to send her power to
Leo, giving him enough strength to seize the immature
King of Terror and drop him into an active volcano.
However, the act took its toll on him, and Mothra
was severely injured in the process. His quest
completed, Leo crashed onto the hard cretaceous
ground, his life slowly draining from him. As
the light began to fade from his eyes, the larval
forms of his ancestors surrounded him. Seeking
to preserve their descendant, they encased him
in a cocoon of silk, preserving his life and preparing
him for his final, most powerful transformation.