A nick used by people (usually morons) on nearly every website ever.
Often combined with numbers or words such as "Sephiroth666" and "x-sephi_luver-x"

Originates from Final Fantasy VII, a video game that has lost all its originality and charm due to endless remakes, fanfics, movies and other spin-off games.

The son of Lucrecia.

Sephiroth was the first ever human to be injected with Jenova cells. There are many like him. Although there are few who are as strong as him. He is the person who called upon meteor to injure the planet.

The greatest game character of all time. He tried to use Meteor to damage the planet so he could absorb its energy to become a god, Safer Sephiroth is as close to a god he ever was he even had a kick ass theme song in this form (one-winged angel). In kingdom hearts some queer assholes played a cruel prank by casting Lance Bass as Sephiroth.

A badass/popular/coolest villain fromFinal Fantasy 7who's doing anything to destroy the world with meteor and he made the main character/hero Cloud became angsty with taking away the person whom Cloud loved,Aerith by stabbed her from behind.Also he has a cool theme song "One Winged Angel".

Before Sephiroth was a good/sane guy and a hero until he went to Nibelheim together with Cloudand Zack,accidentally he found a Jenova's project there, his heart had torn into small pieces,hatred,pain,and sad for knowing the truth that he's nothing more than just an experiment,so misunderstanding happened when he thought that Jenova was his mother plus of his loneliness,finally,Sephiroth had chosen the wrong path where he ended up himself as a villain,and died in a fresh young soldier's hand.

Sephiroth is potrayed as a tall,long silver haired,slender and handsome/masculine figure.

In reality many fangirls like him because of his looks, and fanboys like him because of his badassness..

Sephirot, Sephiroth, or Sefiroth , singular: Sephirah, also Sephirah "enumeration" in Hebrew).

Sephiroth (or "enumerations"), in the Kabbalah of Judaism, are the ten attributes that God (who is referred to as Aur Ain Soph, "limitless light") created through which he can project himself to the universe and man. These emanations manifest not only in the physical part of the universe, but also in the metaphysical one. Kabbalah distinguishes between four different "worlds" or "planes":

Atziluth , or "World of Emanations", on this level the light of the Ain Sof radiates and is still united with its source.
Beri'ah or "World of Creation", on this level the first concept of creation ex nihilo however without any shape or form. This is also where the Highest Ranking Angels are to be found.
Yetzirah or "World of Formation" on this level the created being assumes shape and form.
Asiyah'or "World of Actions", on this level the creation is complete, however it is still in a spiritual level. At a later stage there is the 'physical Asiyah' comprising our physical world with all its creatures.
Each of these worlds are progressively grosser and further removed from any revealed Godliness, however the ten Sephiroth manifest in al...

The man, the myth, the mama's boy. The main antagonist of FFVII. Started off as the greatest SOLDIER to ever have graced Shinra inc. (well until he went nuts and slaughtered an entire town, but more on that later). As shown recently his best friends were Angeal and Genesis. Both of whome did the whole turncoat thing first, albeit for very different reasons that him.

Sephi (as the fangirls, and some fanboys refer to him) was the product of the jenova project. Which was headed up by Prof Hojo, who is also Sephiroth's pops, and prof Lucretia, his birth mom. Now Hojo and Lucretia, whome was the object of Vincent Valentines affection (but that's niether here nor there so lets move on), were a couple of scientist who had a thing on the side. So when Lucretia got knocked up Hojo decided it would be the perfect opportunity to further the experiment, and so he injected JENOVA cells into the fetus.

Well long story short Sephiroth was born, Lucretia was thought to have perished during labor, and Hojo shot Vincent and turned him into a guinea pig.

Fast forward twenty something years, Seph's a rising star in SOLDIER. The hero of the great war with wutai, and probably getting more tail than the Rolling Stones (er probably not as much as the stones, but pretty close). As mentioned above he had two best friends, both of whome were the results of a similar project, project Gillian. Lots of stuff happened one of his buds dies, at the hands of Zack Fair (Clouds buddy, Aeris beau). ...

The most badass videogame villian ever.