The following section lists all seiyuu / voice actors who has voiced Sephiroth at one point or other.

Miki Shin'ichirou

Miki Shin'ichirou is easily one of my favorite seiyuu. He has a strong baritone that can range from playful and ditzy, to the somber and sexy-arrogant, as seen in a lot of characters that he has voiced so far.

Miki Shin'ichirou voices Sephiroth for the Erhgeiz Playstation game (Japanese version). Sadly enough, he did not have a Japanese voice for the Kingdom Hearts Playstation 2 game, although Miki Shin'ichirou probably would have voiced him there as well.

Some other popular characters that Miki Shin'ichirou has voiced: (series alphabetical order)

Angel SanctuaryKatan
Ayashi no CeresMikagi
BleachUrahara Kisuke
Full Metal PanicKurz Weber
Fushigi YuugiYuuki Keisuke
Get BackersTakeru Teshimine
GravitationAizawa Tachi
Haru wo DateitaKatou Youji
Initial DFujiwara Takumi / Tak
Kaikan PhraseTodou Yukifumi
Kyuuketsuki Hime Miyu / Vampire Princess MiyuLarva (TV series)
PokemonKojiro / James
Scrapped PrincessShannon
Tenkuu no Escaflowne / Vision of EscaflowneAllen Schezar; Amano
Tsubasa Reservoir ChroniclesTouya
Yami no Matsuei / Darker DescendantAsato Tsuzuki

Morikawa Toshiyuki

Morikawa Toshiyuki has one of the best "villain" voices ever, and for good reason. He has a decidedly deep, mocking and very suave voice best suited for antagonists rather than protagonists, and never sounds out of place. It's no surprise that he voices many of the best known villains in anime. (Although it cracks me up to know he voices Ichigo Kurosaki's father in Bleach, that funny bastard XD)

Morikawa Toshiyuki voices Sephiroth in Final Fantasy: Advent Children. I believe he also voices Sephiroth in the Final Fantasy: Last Order OAV.

Some other popular characters that Morikawa Toshiyuki has voiced: (series alphabetical order)

Gensomaden SaiyukiHomura
Haru wo DateitaIwaki Kyousuke
Inu YashaNaraku
Last ExileAlex Low
Peacemaker KuroganeIchimura Ryunosuke
Speed GrapherSuitenguu Chouji
Street FighterRyu
Tenjou TengeTakayanagi Mitsuomi
X (TV)Seiichirou Aoki
Yami no MatsueiSeiichirou Tatsumi
Yuu Yuu Hakusho / Poltergeist Report / Ghost FighterShishiwakamaru

Seiyuu Trivia

In the yaoi series Haru wo Dateita, Morikawa Toshiyuki plays one of the main characters Iwaki Kyousuke. Miki Shin'ichirou plays the other main character, Katou Youji. Katou Youji and Iwaki Kyousuke happen to be lovers. ^^;

Lance Bass

Lance Bass is a member of the boy band N'Sync, and he voices the English version of Sephiroth in the Playstation 2 game, Kingdom Hearts.

I don't really have anything to add to that one. Except maybe, EEWWWW.

Memorable Quotes

Sephiroth has many wonderful quotes, in actuality everything he said can be a quote, but here are some!

Final Fantasy Seven

"How does it feel? It's your first time back to your hometown in a long time, right? So how does it feel? I wouldn't know because I don't have a hometown..." - upon first arriving in Nibelheim.

"...Trust me." - to Tifa's father, who was worried about the SOLDIERs using Tifa as a guide through the Nibelheim mountains.

"...I've always felt since I was small... That I was different from the others. Special, in some way. But... not like this..." - upon seeing the mutated creatures in the Mako reactor in Nibelheim.

"Only death awaits you all. But do not fear. For it is through death that a new spirit energy is born. Soon, you will live again as a part of me." - after wounding Tseng when the Turks search inside the Twemple of the Ancients.

"You are just a puppet... You have no heart... and cannot feel any pain... How can there be any meaning in the memory of such a being? What I have shown you is reality. What you remember, this is the illusion. ...Do you understand?" - after Cloud realizes his memories of five years ago were false.

Final Fantasy : Advent Children

"The most important thing to you... will you give me the pleasure of stealing it?" - after stabbing Cloud on the shoulder.

"I won't be just a memory." - final words.