I think it's Royce. In Japanese, they wrote it ロイス (roisu), so i bet the translator thought the name is Louis. But maybe after they confirm it, it was actually Royce, so they changed it to Royce :)
Yup, Japanese katakana is weird. That is just how Mcd becomes Makudonarudo~ hahaha
So the sexual disorder name is Louis or Royce?? I'm enjoying but confused by the name at the same time (づ ̄ ³ ̄)づ