Avery Dewey is Duncan's father who appears in the second book. He does not appreciate technology much, he has a job as a mechanic, and he has been working on a 1968 Ford Mustang since before Duncan was born. He used to be a boxer. Prior to Jackson Jones, he was the only parent that knew about the NERDS. When he found out that Duncan had been on a mission without his upgrades, he took Duncan out of the NERDS.