Giygas

Giygas, also known as Giegue in, is the main antagonist in Mother and EarthBound. Giygas was raised from an early age by a woman named Maria and her husband George, both of whom were abducted from Earth in the early 1900s.

In
In Mother, Giygas leads an army of aliens and robots in an invasion of planet Earth, starting eighty years after George's escape from captivity at the hands of Giygas' faction. The operations of Giygas' forces consist primarily of abducting and harrying the citizens of the region of America in which they are stationed.

Atop Mt. Itoi, Giygas is confronted by Ninten and his companions. Before the fight actually begins, Giygas offers to spare Ninten's life and allow him to come with him back to his home planet, presumably out of respect for Ninten's great-grandparents, who raised Giygas. Ninten declines, and after being turned down, Giygas attacks him. Once in battle, Giygas is immune to all forms of attack; while he still appears to take damage, his HP is effectively bottomless. Instead, Ninten and his friends must repeatedly attempt to sing the Eight Melodies, hoping to remind Giygas of his memories of Maria. Eventually, as Ninten and company finally managed to finish the song, the emotional stress becomes too much for Giygas to handle, and he retreats, calling back his forces and promising that he and Ninten will meet again.

For clarity, the player cannot name a character Giegue.

In-game description
"(Ninten hears the voice of Queen Mary) Giegue cannot be defeated with force... You cannot defeat Giegue with a weapon of any kind. You must SING my lullaby, with all your feelings... SING my lullaby with all your heart."

In EarthBound
In EarthBound, Giygas has gained unimaginable amounts of power. 10 years after the time period of EarthBound, Giygas invades Earth and discovers the Apple of Enlightment. When the Apple predicts his downfall at the hands of Ness, Giygas travels ten years into the past to defeat him and to halt his progress. Buzz-Buzz, a survivor of Giygas' invasion, also travels back in time to inform Ness of Giygas' actions.

During EarthBound, Giygas influences people, animals, and inanimate objects over Earth. Ness and his friends (deemed the Chosen Four) encounter his presence via wild animals, sentient plants, and otherworldly creatures. The Mani-Mani Statue also assists in spreading Giygas' domination by inducing control over people such as Mr. Carpainter and Geldegarde Monotoli. Spiteful of Ness as well, Pokey Minch also allies with Giygas.

As Ness gains the power of all eight Your Sanctuary locations, Giygas begins his invasion of Earth in the Eagleland city of Onett. Ness, along with Paula, Jeff, and Poo travel back in time using the Phase Distorter to face Giygas in the Cave of the Past. Enclosed within the Devil's Machine, Pokey Minch states that Giygas' unfathomable power destroyed him and his mind, and as such, he can only be truly manifested in an incomprehensible form that takes place in a mysterious dimension: a dimension that is revealed to Ness and his friends when Pokey turns off the Devil's Machine. Giygas remains undefeatable by physical attacks; rather, he is destroyed by Paula's prayers to the people of Earth and to the player itself, exposing his weakness to emotion. Giygas disintegrates and ceases to exist, ending his evil influence over the world.