Pythagoras and Hercules' It Has Been an Honor moment in the second episode. When they believe they are facing certain death Hercules tells Pythagoras he has been a true friend. Pythagoras tells Hercules that he has been an awful friend, but that he'd rather die beside him than with anyone else. Then Pythagoras hugs him tightly.
In the season two premiere, Pythagoras and Hercules telling each other their reasons for following Jason. Hercules wants to become the man he pretended to be, while Pythagoras outright admits the two are the closest thing he has to family.