I just did a couple papers on similar stuff
Some people (who are real, most i did were on novel characters) i dicussed were
Oscar Schindler (Schindler's list) Who saved a bunch of Jewish people during the holocaust, he did not start out altruistic but changed and spent all his money on saving peoples lives
Paul Rusesabagina (Hotel Rwanda,) During the Rwandan genocide did something similar to Schindler, saved hundreds of peoples lives.