wavelab keeps creating .gpk and .mrk very confusing

Why is it that after I edit audio on wavelab, more files appear in folders making it difficult to find the files I need, each one seems to have an additional .gpk and .mrk file. or at least maybe there is a way to globally hide those files?

Yes, there is an option to either have them written in a different location, or to have them deleted after closing Wavelab. This also means that WL will have to create them again at reopening the files.

True for the .gpk files. For the .mrk file, this is always beside an audio file. But there is also an option not to create them, which is possible if you only use wav files.