I find that there are quite a few candidates, but lets look at some of the composers to see if they give way to possibilities:
Masato Kouda Monster Hunter / Devil May Cry - Dante?
Tomoko Sasaki (TOKIOHEIDI) NiGHTS - NiGHTS?
Yasunori Mitsuda
(PROCYON STUDIO CO., LTD.) CHRONO TRIGGER / XENOGEARS - Chrono?
Yoko Shimomura Kingdom Hearts series - Sora?
Keigo Ozaki
(GAME ARTS Co.,Ltd.) PROJECT SYLPHEED
Takahiro Nishi
(GAME ARTS Co.,Ltd.) GRANDIA series /
PROJECT SYLPHEED
Yutaka Iraha
(GAME ARTS Co.,Ltd.) SYLPHEED series - Katana Faraway?
Shota Kageyama Luminous Arc - Alph?
Koji Hayama Cho Aniki / Ape Escape 2 - Ape Escape Ape?
Kenji Ito ROMANCING SAGA series /
CULDCEPT SAGA - Albert?
Masafumi Takada
(grasshopper manufacture inc.) killer7 / GOD HAND - Gene? - Harman, Garcian, Dan, KAEDE, Con, Kyote, and/or Samantha Smith?
The possibillitiess are numbered, but there are plenty of them.