Rick Courage

Rick Courage is one of the two sons of Dr. Courage, and the older brother of Max Courage.

Personality
He is very bitter since his father does not even recognize him as his biological son, and because Max is obviously the favorite.

It is possible he has a better relationship with his brother than their father because Rick didn't appear to hold any resentment towards Max when talking to him in the cell, and only expressed his anger towards his father.