Much like Oliver Queen, Barry has a strong sense of justice; due to the fact that he knows that his father, Henry Allen is innocent of a crime that he was convicted of, he joins the forensics department to both learn how to investigate crimes and study cases with unexplained elements, to prove his personal account of his mother, Nora Allen's murder true and ultimately, free his father. Barry is very intelligent, like Felicity, he is socially awkward; as he sometimes gets nervous and babbles.