Complex sentence: In their initial dub of the series, Funimation changed his name to "Hercule"; but when they recorded a new dub for uncut home video releases, they used the original name of Mr. Satan.
Split into simpler sentences: In their initial dub of the series, Funimation changed his name to "Hercule". However, when they recorded a new dub for uncut home video releases, they switched to using the original Mr. Satan.