I can't decide wether Gary is a teen and or a young adult.

Gary is a Teenager

  • Compared to the majority of adults in the series Gary doesn't formally instead we get a simple "Hey Manny, how's it going?".
  • He looks younger than Manny and even his facial hair. In the real world, there are teenager boys with facial hair.

Gary is a Young Adult

  • Gary is very responsible like an adult.
  • Gary works as a mechanic in his own garage which is unusual for a teenager to have a job like that.
  • He cares for the Automotive Team and gives them wonderful advice.