FuSoYa

Fusoya, also known as FuSoYa or Fusuya, is the final playable character in Final Fantasy IV who also appears in Final Fantasy IV: The After Years. He is a Lunarian from the Red Moon, and it is his job to watch over the Lunarians' sleep. He is the oldest of the main characters and reveals significant plot details during the short time he is with the party. In the English localization of the 3D remake version, Fusoya is pronounced [fuˈsɔɪ.ə] ("foo-SOY-uh"). In the iOS version his name is mistranslated as Fusuya.

Appearance and Personality
Fusoya is an old man wearing blue and purple robes of varying shades. His true age is unknown, but as he reached Earth when humanity was still evolving he may be one of the oldest characters in the entire Final Fantasy series. He has long silver hair and a long beard with bushy eyebrows, and has light blue eyes.

Fusoya is wise and well-spoken, possessing knowledge of magic and the universe far beyond what he reveals, and like the other Lunarians he awaits the day when humans evolve to the point their two races can co-exist in peace. Upon slaying Zemus, he expresses pity at the great powers Zemus wielded being used for evil ends.

Etymology
"Fu" and "su" are Chinese words that respectively mean "good fortune" (福) and "longevity" (寿). "Ya" (阿) in Chinese is an affix which is used to mark some people's names. Kluya also has this affix.