The identity of the old man in such a story can vary. Maybe he's a powerful wizard, a fallen angel, or a hidden deity. It really depends on the specific plot and background of the story.
In the God and Satan story, the old man is often considered to be God. God is typically depicted as an all - powerful, wise, and often father - like figure, who is in a struggle against Satan for the souls of humanity.
The moral is probably about the importance of unity. If the sons don't stick together, they may face difficulties. Just like in the story, when they are divided, they can't achieve much.
The moral could be about the importance of memories and the connection to the past. The old man's hat might represent his life experiences and the things he holds dear.
There's not enough detail to know for sure who the old man is. He could be a variety of things. He might be a war veteran who has some skills or knowledge that comes into play in the story. Or perhaps he's an old family friend of one of the characters, and his presence in the story is to provide a different perspective or a connection to a past event that is related to the events in 'Equalizer 2'.
He is a character who embodies the despair and displacement brought about by war. He's an old man who has been through a lot. Maybe he had a simple life before the war, but now all he has left is the bridge where he sits. He doesn't seem to have any strength or motivation to move forward, and his presence at the bridge is like a statement about the state of so many people during war.
Obviously, the central characters are the old man and his sons. The story likely revolves around their relationships, actions, and interactions. The old man is probably an important figure guiding or influencing his sons in some way, and the sons, with their individual personalities and behaviors, play a significant role in the development of the story.