Subaru, Tsukasa and Helba are unlocked when you beat the game.
Secret area: To get the highest level armor and weapons, go to Omega Chosen Solitary White Devil. This area's dungeon has no required fights and is a 2 floor dungeon.
Secret Keywords: At the bottom of the ad for Quarantine in the January and February 2004 issues of Shonen Jump, the keywords ''Reincarnated Elusive Lyric Poet'' can be found.
Secret Keywords: These Keywords are the best for getting the 6 Gott Statue only Weapons which are needed to finish the Item Quest.
Baian: Omega: Discovered Forbidden Sunny Demon
Rugrat Nights: Omega: Generous Corrupted Fort Walls
Evil Eyes: Omega: Soaring Sky Hopeless Cat Market
Gungnir: Omega: Vaguely Hopeless Sunny Demon
Madlance: Omega: Generous Corrupted Great Seal
Awful Stun Rod: Omega: Turbulent Loose Aqua Field