PCSX2 handles save data in two distinct formats. You must know which one you have before importing.
Alternative: If the save is a raw .ps2 file, rename it to Mcd001.ps2 and replace. ultraman fighting evolution 3 save data pcsx2
Play as secret characters like Ultraman Legend, Evil Tiga, Gloker Bishop, and Delusion Seven. PCSX2 handles save data in two distinct formats