Ness is a boy from the town of Onett. He is the protagonist of EarthBound. He is a gifted child with various PSI powers, and has the power to use each of the eight Your Sanctuary locations throughout the game to add some notes to the Sound Stone. Upon ridding his mind of all of the evil within him, Ness unlocks his true potential and becomes the absolute strongest member of his party.
Ness's adventure first starts when a meteor crashes in Onett. He goes to investigate, but goes back. He later comes back with his neighbor Pokey to find Picky, Pokey's brother. While there, Ness meets Buzz Buzz who tells Ness about him going to save the world from Giygas, the game's main antagonist. Ness eventually meets with threeotherpeople, who also have been given the same fate. They travel through the land, and eventually defeat Giygas. After this, Ness receives a letter from his mother, who tells him about the family not eating as much of his favorite food anymore. He also escorts Paula back to Twoson.
Ness was a seemingly-average kid from Onett, but in truth, he was destined for much more. When a strange meteorite landed near his hometown, the little boy with psychic powers set out to save the world. Little has been said of Ness's character, and much remains hidden.
Super Smash Bros. Melee
Ness is a young boy who's mastered the psychic power known as PSI. Ness was living a normal life in the suburbs of Onett until a meteor crashed into a nearby mountain and sent him on a wild adventure. Believing in the ultimate powers of wisdom, courage, and friendship, Ness proves that some heroes come in small packages.
The key to mastering Ness is controlling his unique midair jump, which makes up for what he lacks in speed. His PK Flash attack may seem weak at first glance, but it grows more powerful the longer you hold down the B Button. To do a lot of damage with PK Fire, try to burn your opponent as many times as possible.
Ness's mind is his best weapon. PK Thunder is a PSI missile weapon that can be guided using the Control Stick, and if Ness hits himself with it, he turns into a living missile capable of doing massive damage. This move can also be used for recovery. PSI Magnet turns energy missile attacks into health; try out certain Pokémon for stamina replenishment.
Super Smash Bros. Brawl
An average boy whose life changed when he found a meteor and an alien on a nearby mountain. The alien warned him of a future threat, and adventure ensued. He can use psychic energy known as PSI, and also wields a bat and yo-yo. This brave youth gives his all to defeat the evil Giygas.
Ness as he calls down a host of damage dealing stars in his Final Smash. Everyone on the screen must dodge like crazy to avoid getting hurt, but that's no easy task. This attack first appeared in the Mother series, but it was Poo, not Ness, who wielded it. Perhaps Poo taught Ness the secret of the attack for use in Super Smash Bros. Brawl.
Super Smash Bros. for Nintendo 3DS
Hailing from Onett, a small town in Eagleland, this young boy's ordinary looks hide his psychic powers. Ness fought against the evil Giygas in EarthBound, and in Smash Bros. he unleashes some of the same PSI moves. Watch out for PK Thunder, a guided attack that can also launch Ness like a rocket!
Ness may have psychic powers, but that doesn't mean he shies away from getting physical. His side smash packs a real punch if you hit enemies with the end of his bat, and it can even deflect projectiles! His up and down smashes also have a lot of range—Ness can land his strikes with ease!
Super Smash Bros. for Wii U
In EarthBound, this PSI ability belonged to Poo, the Crown Prince of Dalaam and one of Ness's friends. Ness must have learned it especially for Smash Bros.! The attack makes a shower of meteors fall onto the stage, damaging any foe it hits. While the attack's in progress, Ness is invincible and can adjust the meteors' trajectory.
Super Smash Bros. for Nintendo 3DS and Wii U
Ness reappears as the sole representative of the Mother Franchise. His moveset is largely unchanged, but with considerable buffs, making him a much stronger character. His overall appearance has changed as well, wearing brighter colors and his overall head being more proportional to his body, as well as losing the rosy cheek accents that were there previously. He retains PK Starstorm as his Final Smash, and gains PK Freeze as a custom special move.