Nanaki

[Sephiroth]

Katakana: Na-na-ki. Nuhnuh-key. People also say Saiyenn to Cyan even though he is pronounced Kaiyenn (Cayenne) since he is called Ka-i-e-n.

EDIT: There is a differece between non-canon mistranslations (Aeris, Reina, Salsa, Reverse - Bizarro - Sephiroth, Safer Sephiroth, Fourth Bracelet, Atma Weapon, et cetera) and canon alternate country versions (Terra, Artemisia, Zack, et cetera). Everyone can say Aeris if they want. Even I call Tidus "Tieduhs" just because I think it sounds better and I say Reina instead of Lenna and Salsa instead of Sarisa. But that does not make them officially right.