The number 43 is a recurring Easter egg that is hidden around Odd Squad headquarters. The episode Training Day revealed that 43 was the agent number of Odd Todd, an ex-Odd Squad agent turned odd. Todd hid his number on his old desk, various files and boxes, and generally everywhere around HQ. In the episode Fistful of Fruit Juice, bronze casts of various agents' hands can be seen hanging on the walls, but number 43's hand is missing.