Besides typical English translation and localization, the English version of Kingdom Hearts II differs from the original Japanese version in the content of gameplay and several scenes:

When Sora battles the Hydra in Olympus Coliseum, green blood gushes out whenever Sora harms it. The green blood was changed to black and purple smoke in the English version, though the cutscene where Hercules was fighting it retains the green blood. The reason for this change is unknown, as even the original movie had the green blood.
Xigbar's telescopic sight was changed from view with a crosshair and black...