turn out to be
turn out to be (someone or something)
To be eventually discovered or considered to be a certain type of person or thing in the end or over time. The tomb turned out to be the resting place of an Egyptian Pharaoh. He was so charming on our first date, but he turned out to be a real jerk. This project is turning out to be a huge pain in the butt for everyone on the team!
turn out to be someone or something
to develop or become someone or something in the end. In the end, he turned out to be a handsome prince in disguise. The previous prince turned out to be a frog.