Just wondering if anyone knows how to extract data from these .pak/.gpu files

The .gpu files sometimes contain more data than the .pak files and are usually accompanied together but sometimes the .pak files will be on their own.

 

Here are some samples 

https://gofile.io/d/6Ff0Rb

I just recently modified my Shantae Half Genie Hero pak BMS script to making it work with your samples (PS3 is using big endian)

get HEADER_SIZE long
endian guess HEADER_SIZE
get FILES long

for i = 0 < FILES
	getDstring DUMMY 16
	get OFFSET long
	get SIZE long
	get NAME string
	
	math OFFSET + HEADER_SIZE
	math OFFSET + 0x40
	
	string NAME R ":" "/"
	
	log NAME OFFSET SIZE
	
	padding 8
next i

Unfortunately as for the GPU files, due to them are being in big endian, that means none of them works with the wfLZEx tool.
Even the files from the extracted pak archives.