Diedre Vance and Nina Damfino work for the Riddler together as the group called "Query and Echo".
As with most henchpeople, Query and Echo joined Riddler for the money he would provide them.
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Batman Villain(s) This character, team or organization, is or was primarily an enemy of the Batman, or the Batman Family as a whole. This template will categorize articles that include it into the category "Batman Villains."