[HELP] Translating Klonoa: Empire of Dreams to Spanish (GBA)

[Hiro X]

Hello RomHacking Community!

I decided to work on some GBA games so I decided I would do Klonoa Empire of Dreams first because I couldn't find any Spanish patch for it, I tried opening the game in Hex Editors such as Crystaltile2 and also Graphic editors like Tile molester and Tile layer pro, but I could not find any graphics for characters in the Rom, the only thing I found with the Hex Editor was a development text in ASCII and decided to create a Table file based on it, but still using the table I could not find any text, I tried relative searching but making tables out of it did not help either.

I guess the game is compressed in some strange way that only Namco workers knew about so, how could I corrupt the Rom to modify the text?

Are there any other ways around the problem?

Anyways, thank you for reading! Have a nice day. (Sorry for my bad english, it's not my native language).