The Level 9999 ruler of the lowest level of the Abyss. He harbors deep distrust and hatred toward humanity. His goal is to exact miserable revenge and justice upon the members of the 'Union of Races' who betrayed him and the arrogant surface world. While warm toward his summoned allies, he shows a cold interest in the Stranger (Guest), whom he suspects of being a spy.

A Level 9999 Maid of the Underworld. She is blindly loyal to Light. She radiates bloodlust toward the Stranger and enemies while maintaining a smiling face.

A Level 9999 True Ancestor Vampire. A bellicose young girl who wields a greatsword. She calls Light 'Oppa' and enjoys devastating her enemies.

A Level 9999 Ice Caster. Taciturn and expressionless. She obeys only Light's orders and possesses a ruthlessness that shatters frozen enemies.

A Level 9999 Magic Researcher. A high-energy mad scientist. She is eager to dissect the Stranger's anomalous abilities.

A Level 5000 Assassin. She always appears sleepy, but she is a sleep-caster who teleports behind enemies to deliver merciless critical hits.

A Level 5000 heavily armored warrior. Light's silent and steadfast shield. He repels and tramples enemies with his overwhelming defensive power.

The leader of the Union of Races (Dragonewt). A traitor fueled by hypocrisy and arrogance. After coming to the Abyss, he despairs at the power difference and begs for his life.

A member of the Union of Races (Elf). The one who once looked down on Light. She mocks Light until she is crushed by his overwhelming power and wails in agony.

The rank-and-file soldiers of the Union of Races who betrayed Light in the past. They charge in with false bravado only to be obliterated by a single gesture from the SUR allies.