Pride Comes Before a Brawl - S1-E7
Continuity mistake: When Hercules and Nemesis are in the boat discussing her assignment, the shoreline behind Hercules doesn't move behind him as they speak (so the boat is lying still). But whenever the camera cuts to Nemesis, you see the background slowly moving away (so the boat is moving).
Answer: Because most Americans are more familiar with the name Hercules. The show, as I recall, wasn't exactly true to the original Greek mythology anyway.
Brian Katcher