I can’t remember if it’s specifically in the game rules or just one of those common sense rules. If not please add to the official rules about mercs. To many times I have a merc and when they whisper me to tell me they are my merc and they want to know my class. This is fine btw. Most also ask me if I’m good or evil. This is because of the “all classes side with BD” meta. I literally had a merc out me as unseen because I was acting evil. He said he was siding with BD. I was actually a legit BD drunk when executed in that scenario but still holds its value. Too many times mercs claim they can side with evil or BD because they are neutral.
It needs to be stated definitively in the rules or class card that mercs don’t take sides and outting your contract no matter what side they are is grounds for throwing and reportable.