How do I rip sprites from GBA games?

[alphabetlorefan2003]

So uhh, I am basically trying to rip every sprite in WarioWare, Inc.: Mega Microgame$!, but there's one problem: how can I rip the sprites? Now, I could just use VBA's OAM viewer but the thing is that I can't rip the sprites that aren't visible, and there are also unused stuff in some microgames (like Mountain Mountin' which has an unused walking animation) that I want to rip, which I can't with the viewer because well, those sprites are unused.