Spoiler Warning: Plot details follow. Read at your own risk.
Story[]
The Abyssal Princess (貴き深淵の令嬢), known previously as Princess Lemuria, is the Super Boss of Etrian Odyssey Nexus. Defeating her is mandatory to proceed with defeating Jormungandr's full power, as the Yggdrasil Fruit necessary to rob Jormungandr of its power is being held by her, preserving her body long after her life had faded. As Jormungandr sought freedom, it attempted to manipulate her soul, bending her to its will.
After her defeat, the Yggdrasil Fruit is acquired. Jormungandr completes its resurrection in the Yggdrasil Labyrinth and the player now has to defeat it to truly complete the adventure.
Enemy Data[]
| Abyssal Princess | |
| |
| Description | |
|---|---|
| This former princess dwells quietly in the abyss. She will not budge from her massive throne. | |
| Enemy Data | |
| HP | 164,496 |
| ATK | 255 |
| MAT | 247 |
| DEF | 204 |
| MDF | 189 |
| EXP | 793,690 |
| Skills | Condemnation, Lure of Death, Hellish Stab |
| Items | Abyssal Shard |
| Weakness |      
|
| Resistance | None |
| Status Resistance |     
|
| Status Immune | 
|
| Gothic Soul | |
| Description | |
|---|---|
| Enemy Data | |
| HP | 3,500 |
| ATK | 218 |
| MAT | 218 |
| DEF | 131 |
| MDF | 190 |
| Weakness |
|
| Resistance | None |
| Status Resistance |
|
| Status Immune |      
|
Skills[]
- Condemnation (Uses None): Powerful ranged Almighty attack to entire party, cannot miss
- This skill can only be used once there are four Gothic Souls in the battle. She will only use this move at the end of the turn, so killing even one Gothic Soul will prevent this attack from happening.
- Undead Regen (Uses None): Any damage dealt to the user (including damage dealt with Almighty damage), will be healed for ten times the amount of damage they would've taken that turn. Capped at 99,999 per activation.
- Unholy Light (Uses None): Rids user of every single disable and debuff (with the exception of Petrify, Panic, or Asleep), along with ridding every buff on the party.
- Violent Blades (Uses Arms): Randomly hits the party six to nine times, may have a chance to inflict Head, Arm, or Leg bind.
- Lure of Death (Uses Arms): Has a very low chance to inflict Instant Death, Petrify, Sleep, Panic, and Poison to the entire party.
- Dark Invitation (Uses Arms): Deal bash damage to the entire party, may inflict stun and paralysis. Fast act speed.
- Endless Drop (Uses Arms): Line-piercing bash damage, chance to inflict Blind and Curse.
- Hellish Stab (Uses Legs): Powerful stab damage to one party member.
- Dark Lunge (Uses Legs): Line-piercing stab damage at the start of turn. May inflict sleep, heals the user based on damage dealt.
- Scorching Hell (Uses Head): Ranged fire attack to entire party, places damage debuff for 3 turns.
- Frozen Hell (Uses Head): Ranged ice attack to entire party, places defense debuff for 3 turns.
- Thunderous Hell (Uses Head): Ranged volt attack to entire party, places HP recovery and max HP debuff for 3 turns.
- Death Tumble (Uses None): Summons one to four Gothic Spirits depending on her HP threshold.
Drops[]
- Abyssal Shard (Worth: 500,000 en)
- Unlocks the Ameno Habakiri (ATK+255, MAT+140, Black Flash Skill), the strongest Katana in the game.
Strategy[]
- See Abyssal Princess/Strategy for more information.
Triva[]
- The boss music that plays for her is Calling That Detestable Name, remixed from the original Etrian Odyssey III game. The song choice may be a callback to the Abyssal God, given the naming theme of the boss itself, the fact that both bosses appear in the final labyrinth that appears after beating the game, and the fact that they both share the status of being super bosses of their respective games.