- Couldn't think of a name tbh
- Converts and dies like a normal yakuza. The converted becomes its mafia counterpart.
- -Trackers become Scouts
- -Watchers become Lookouts
- -Doctors become Quacks
- -Lynchers become Fools
- -Other third parties become Survivors
- -Virgins/Drunks become Hookers (lol)
- -Millers become Nilla Maf
- -Morticians become Janitors
- -Villagers become Traitors
- -Traitors have no effect
- -Agents become Spies
- -Bodyguards become Interceptors
- -Detectives become Stalkers
- -Shrinks become Enforcers
- etc, though certain roles would be hard to find a counterpart for, and should (IMO) become traitor instead of niller. I need help to think this one through tbh.

So that both sides win.
Could call it converter.