3 checks. 4 people.
This leads to pairs. In one of the status pairs, there's an inaccuracy. Or 2 unknowns. We don't know if all 4 statuses of the presumed Despair are known.
And if Humer and Alex have the same statuses, then the second mafia member is not Humer. Or not Alex.
And who is it? Yes, I will consider the version with the Heroesist being the mafia.