mono-stereo There is obviously somthing wrong if said shagger rapes and sexually assaults people, you might call them a sex pest
But @alistair already said that supposedly Brand has “always been a sex pest” - so to use your confused definition, that would indicate that it was supposedly already known that Brand was someone who has always committed sexual assault. In which case, why didn’t you or alistair already comment prior to these stories that Brand had committed sexual assault?
And also, if someone was a rapist or had committed sexual assault, why would you not instead simply refer to them as being a rapist or someone who had committed sexual assault? Again, your use of the term seems very unclear, vague and confused.