I don't really see the point of having a bigger monster sprite. If you look at mould #6, which is 128x128 I believe, it already takes most of the screen available to display a monster. I don't think anything bigger than ~156x156 could fit...
You would need to create a new mould to fit your monster sprite and insert it by hand (create monster composition data and insert graphics) in the ROM since FF3SE doesn't allow images larger than 128x128.
You would need to create a new mould to fit your monster sprite and insert it by hand (create monster composition data and insert graphics) in the ROM since FF3SE doesn't allow images larger than 128x128.
