A twelve-year-old American boy, who lives with his parents and twin younger sisters outside the town of Podunk (Mother's Day). He sets out to find the Eight Melodies and possibly uncover secrets about his mysterious great-grandparents. Not much information is given about his personality, but he seems to be a kind, brave kid, if with a bit of a temper. He loves prime ribs, penguins, and baseball, and occasionally suffers from asthma.
Combat Medic: He has a powerful physical attack, the strongest of all permanent members, but all of his PSI is assist and healing. He doesn't even get a Signature Move like Ness's PSI Rockin or Lucas's PK Love.
Fountain of Expies: His appearance (especially his trademark striped shirt) set the standard for MOTHER series protagonists.
Ness is the most obvious example, as he is almost an exact copy of him. As Ness is more well-known, this sometimes leads to confusion, as they share the same outfit. Fans often draw Ninten wearing a red neckerchief and a red, white, and blue stripe pattern on his shirt to differentiate them, based on a live-action Japanese commercial for MOTHER.
Jack-of-All-Stats: Contrasting Ness and Lucas in the sequels, Ninten isn't held back by a horrible Speed stat while still throwing around physical attacks just as hard, which is pretty impressive for an asthmatic. On the flip-side however, his massive PSI movepool is all support and no Offense-grade skills.
The eleven-year-old boy genius from Merrysville (Thanksgiving). Loid is brilliant, but is often bullied by his classmates for being a nerd and a weakling. He developed a tendency to hide in trash cans to avoid confrontation. Despite this, he has a great deal of determination, even when it comes to the dreaded gym class. Bullying has left him very shy and cowardly when he joins Ninten, but over time he becomes stronger and more confident in himself. He likes rockets, science, computers, and Superman.
You Killed My Father: His parents were supposedly killed by wild animals, and he joined Ninten in order to avenge them. The MOTHER Encyclopedia says that it was actually a car accident, but he refused to pay attention to this finding.
A pigtailed young girl whom Ninten must save from zombies.
The ethereal, beautiful queen of the mysterious land of Magicant. She has fallen gravely ill, and the only thing that will restore her to her former self are the Eight Melodies. She is Ninten's great-grandmother, and was the deeply-beloved foster mother of Giygas.
Mentioned only in the prologue and at the end of the game, he is the reason for the alien invasion, as he stole the secret of PSI from Giygas's species. He is the husband of Maria and the great-grandfather of Ninten.
The Atoner: Does his best to protect Ninten from the consequences of his actions.
The grim leader of the invading alien forces. He leads the invasion to take revenge for the human theft of his race's PSI technology, but his resolve crumbles when confronted with the memory of his beloved foster mother, and swears to come back to finish the job later.
Expy: Mewtwo of Pokémon was based on his design, and depending on the Pokémon canon in question other similarities crop up. Which makes sense since the creators of the Mother series (at least this and the second one) APE inc. went on to become Creatures inc. and created the Pokemon series.
Kill All Humans: It soon becomes apparent that he has forsaken love from humans entirely, which is seen during the confrontation with Ninten and friends:
"Ninten! I am grateful to your family. Your Great-Grandparents, George and Maria, raised me when I was very young. But, George stole vital information from our planet that can be used to betray my people... And now, one of his descendants is obstructing our plans, and must be stopped!! Ninten! I am talking about you! Go home now! Perish with the rest of the ugly Earth People. Foolish one, you cannot do a thing with your meager powers... Powers worthy of a lowly insect. Ninten! You alone, I may save you. Just you alone. Board our Mother Ship with me."
Spell My Name with an S: Depending on the translation, his name came up as: Giegue in the original NES Earth Bound (Zero) prototype, Gyiyg in Japan and in EarthBound and Starmen.net's Fan Translation as Giygas.
Start of Darkness: His role here lay the foundation for what he became in EarthBound. Ninten rejecting his offers of companionship, coupled with his memories of his adoptive human mother used against him, tore Giygas up inside, until by Mother 2/Earthbound there's nothing left.