Who is the strongest hero in Heroes of the Storm?

As a seasoned observer in the realm of cryptocurrency and finance, I'm intrigued by the question posed about the strength of heroes in a different domain entirely - Heroes of the Storm. So, let me inquire: In the vast and diverse cast of characters in Heroes of the Storm, who do you consider to be the most formidable hero, standing tall amidst the chaos and conflict, wielding unparalleled power and prowess? What sets this hero apart, making them the ultimate choice for victory in the hearts and minds of players?