Little is known about Evan Rosier's personality, except the fact that he chose to resist and try to avoid imprisonment. This also shows that Evan was willing to fight to the death if necessary, and Voldemort himself noted his absence on the night of his return, acknowledging that Rosier had perished in his serviceEvan would often hang out with Sirius Black with whom he did not always see eye to eye with, Regulus Black both of who share a mutual cousing with Evan