Arthur was the main sidekick of The Tick.
Arthur was an accountant before he met The Tick and they became a crime-fighting duo. The 2001 live action Tick series reveals more of Arthur's early life and that he had a sister and a mother whose name was Bea. It is also known that Arthur is of Jewish descent. His catchphrase is "Not in the face! Not in the face!" He conceived it in season 1 episode 12, titled "The Tick vs. Arthur's Bank Account," while sitting in his apartment with The Tick. The big blue superhero comes up with the idea that they should have neat catchphrases they would say before they fight crime.