Genesis

Genesis (ジェネシス) is a game adaptation-original character introduced in Sword Art Online: Hollow Realization. He is known as the «Black Swordsman» (黒の剣士) by the players of Sword Art: Origin.

Personality
Genesis is known to get strange looks when he is fixated on battle and he enjoys stealing the hard-earned kills of other players.

Hollow Realization
While Kirito and Argo were attempting to clear the second area of Ainground, Genesis was surrounded by other players, who angrily complained to him, but he only mocked the players before departing.

After Kirito saved a Non-Player Character (NPC) from being sacrificed to a monster by other players, Genesis announced his desire for a duel.

Later, in the field, Genesis was in a battle with a dragon when Kirito's group encountered him. As Genesis was overwhelmed, Klein offered to assist, but Genesis rejected the offer. He then performed an mysterious action that re-engaged the dragon and defeated it.