There was no strongest hero in the Battle Song of Heroes of Chaos and Order because every hero had their own unique skills and attributes. You could choose a hero that suited you according to your preferences and game style.
In the game, every hero had their own combat characteristics and abilities, such as high attack, strong defense, and diverse skills. In addition, the attributes and skills of heroes were also different. For example, some heroes needed more health and mana, while others needed more attack and defense.
Therefore, to choose the most powerful hero, one needed to consider the game style and the hero pool. It is recommended that you try to use different heroes to test and challenge to find the most suitable hero for yourself.