Learn English – A word for someone who “does justice” to their (nick)name

I'm looking for an expression (preferably a single word) that denotes someone whose name or title fits them ironically too well. Names and nicknames are usually figurative, but I'm looking for idioms that I can use to make some word play in situations where they could be taken literally.

A few examples of what I want:

• John the Headhunter took the meaning of _{person who does justice to their name} too far. Literal murder is not part of his job description.

• Mary "Smoking Hot" Smith, _{ironically doing justice to her name}, did not manage to leave the building in time and was swallowed by the flames.

• Joe "Please Don't Call Me Joe 'Joe Miller' Miller" Miller, as expected of a _{someone with that nickname}, quit the interview after feeling improperly addressed.
  _{This is actually a real person.}