Alright, today I'm going to show you how to change the hero's intro sprite.
Materials NeededTile Layer Pro
Emulator/Rom
First: Open Tile Layer Pro.
Second: Open up your rom (I am using Diamond Jp for this example)
Third: View -> Format -> GBA
Fourth: Go to hex location, "038E2A80"
(After fixing the picture a bit) You should see this:

Fifth: Now let's change it to look like this:

Sixth: Now, open your rom and you should see this during the transformation:

There you are! Not much of a tutorial, but hey, it's something!