I believe that the sentence uses a simile, because it uses the word "like" to compare the villain's face to that of a statue.
How we gonna answer that not knowing the novel
Defined as a simple story used to illustrate a moral or a spiritual lesson
The correct answer is becoming an astronomy researcher
For starters, it is the only appositive phrase. It is also non-essential because the sentence conveys full meaning even if it was removed.
