Someone once asked...
Someone answered with kindness...
A human with a penis.
Another soul answered...
If you are asking beyond the basic gender binary, and instead about the modern male identity crisis, then: I think my conclusion is just that a good man cares for the other good men that they meet. And they show up for each other, perhaps not perfectly or even very sensibly but they are loyal to an extra degree, while the jouney lasts.
Another soul answered...
Is a person, who can live with honor, that can be true to itself, that is not afraid of looking for wisdom when don't know the answer, and answer with wisdom when somebody ask. Is a person who cares about people around when is needed. Is a person who is willing to sacrifice things for a greater good when is worth. Is a person who can take care of their family, that can be a light of a community and that is not afraid of being a lamb when is needed and lion when is needed.