despite his love for his sons, splinter is fairly militant with them, especially when they are young and inexperienced. splinter's main fear is that he and his family will one day be exposed to the outside world, as he is understandably and protective. he disciplines the turtles when they become disobedient or unruly. his punishments include making them do back-flips repeatedly in the second live-action movie, or being sent to the hashi, a form of punishment in the 2014 film by using chopsticks for balance.