Simos has more morality than the average action flick villain.
Apparently unlike his brother, his dislike unnecessary Killing and when he hold up the bank he try ton make it on a bloodless way not killing anyone, except the guard who deny surrender, even when the girl killed him, he shows not to agree with the mercilless stabbing on the guards body.
On a certain moment he orders to his men to leave free Zeus without any harmming.
He does not put a bomb in a school because he considered himsel "a soldier" not "a monster".
He agreed that his more violent bloody and cruel brother Hans is an *beep* maybe because beinga soldier with a moral code, he dislike his brotherĀ“s brutality.