The original walkthrough (almost unrecognizable by now ^^;) was done by Luke Drelick.
The map, combo commands, and much help for completing the game the first time, were done by Alex M. Lazara and Mike Gregerson. Alex Lazara is better known as Chess Piece Face, from DeJap. He also provided the PSX character pics.
Another Gamer sent in the info about avoiding random encounters, and the crossover shtick with the S-Flag and Blue Crystal Rod items.
NxGaiaxN@aol.com sent in the info about defeating the Clay Idols and HellLords.
Thundergod sent in the offsets for learning techniques; check the Hacking page.
Sebastian, who sent in the info about the repetitious data values for HP, MP and AGL.
Tropicon, who made the detailed world map.
dhsk232 sent in a snippet about cornering Dhaos using Soul Forge.
The game was created by Namco, and the translation was done by DeJap.