Catherine (played by Mitzi Akaha) is Bill the Billionaire’s personal assistant and daughter. She becomes Joe’s love interest in the second half of the musical. She’s stuck in a bind between her father and Joe. On the one hand she wants to honor her family responsibility to her father. On the other hand, she wants to follow her true love: Joe. She changes sides between her father and Joe multiple times, and time will tell which one she ultimately chooses.