Ripping Questions

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So I'm gonna try and get back into ripping from Inazuma Eleven via the game's files, but I've run into a few problems. The bulk of the files in the folders that seem to be of relative importance (model, char, pic2d, etc.) are stored in .pac, .pkb and .pkh format, all of which I am unfamiliar with and don't know what to do with.

Does anyone know any information regarding how to decompress those types of formats?