A character that usually goes through a physical or mental change???

Dynamic Character

Explanation:

A dynamic character is a character who undergoes significant internal change throughout the course of a story. ... Dynamic characters are the opposite of static characters; while dynamic characters change throughout a story, static characters stay the same.

his humanity shines from every page as he bears witness to the tragedy which befell the jewish race at the hands of the nazis. wiesel was a romanian-born jew whose home town of sighet was occupied by the hungarians for most of the second world war. in may 1944, all the jews in the area were forced into cattle wagons and transported to auschwitz.