Yanfei works as a premier legal adviser and lawyer who values fairness, and sometimes puts her values over her job. She is half Adeptus, but was born past the Archon war, and hence has easily adapted to the era of peace and human life. She is very active and often talks a lot. Despite her playful nature, Yanfei takes her job seriously and practically, ensuring she and all involved parties of a case are well accounted for. She is intelligent and does a lot of research before tackling something.