(Grave robbing + powerful + a bit artificial)
Huang Xin thought he was weak at the beginning, but as time passed and he slowly recovered his previous strength and memory, he realized that he was the boss.
After recovering his memory, he can do things as he pleases, sometimes he is timid (to people he has a good relationship with), he cares to the extreme about the people he cares about, and he is very protective.
Please see how he can be his true self in the world of Tomb Raiders.