Jericho is a proud and serious individual who desires to prove herself as a knight. She is stern in her command over the guards of Baste Dungeon and confident in her abilities to the point of arrogance at times,[4] which led to her humiliation by Ban.[6] Jericho is revealed to have low esteem and possibly an inferiority complex due to being female, and disguised herself as a man to appear stronger and avoid ridicule. She also took on to use the masculine self-pronoun "Ore".