Both of them suffer from pride and uncontrolled passion.
Othello is so proud of his integrity and courage that he doesn't recognize his violent temper and his manipulability by Iago.
In art, Hercules was portrayed as a powerful, muscular man wearing lion's skin and armed with a huge club.
He was also described as being a macho man buffoon, who was very impulsive.
They do great deeds and have great power or strength. Antigone makes sure that a Theban right is a Theban due.
But fatal character flaws destroy the lives of the two heroes.
They are known to fight with courage without fear of death. They fight using their own body strength, superpower, or some kind of weapon.
They come to the rescue miraculously and leave without a trace. We are unable to identify who they are underneath the masks and disguises.
However, heroes have not always been people who dress up in costumes and fight crime, as our current society would lead us to believe.
No, heroes started out differently and have evolved throughout the centuries.