The Old Duke

From Calamity Mod Wiki
Jump to navigation Jump to search
The Old Duke
The Old Duke.png
Statistics
TypeBoss
EnvironmentSulphurous Sea
DamageThis attack will cause defense damage on hit. 160 / 288 Expert Mode / 324 Revengeance Mode / 342 Death Mode / 432 Master Mode (Contact in Phase 1)
This attack will cause defense damage on hit. 176 / 316 Expert Mode / 356 Revengeance Mode / 376 Death Mode / 475 Master Mode (Contact in Phase 2)
This attack will cause defense damage on hit. 192 / 345 Expert Mode / 388 Revengeance Mode / 410 Death Mode / 510 Master Mode (Contact in Phase 3)
170 / 296 Expert Mode / 324 Revengeance Mode / 340 Death Mode / 462 Master Mode (Gore)
This attack will cause defense damage on hit. 280 / 400 Expert Mode / 440 Revengeance Mode / 464 Death Mode / 660 Master Mode (Vortex)
Max Life495,000 / 792,000 Expert Mode / 950,400 Revengeance Mode / 1,188,000 Master Mode / 1,425,600 Revengeance Mode Master Mode
Defense100 (attacking)
0 (exhausted)
DR50% / 0%
KB Resist100%
Inflicts debuffIrradiatedIrradiated
100% chance
Debuff duration8 seconds
Debuff tooltipYour skin is burning off
Immune toConfusedPoisonedAcid VenomPearl AuraSulphuric PoisoningIrradiated

Old Duke Trophy.png "The mutant terror of the seas was not alone..." Old Duke Trophy.png

The Old Duke is a post-Moon Lord boss that can be fought in the Sulphurous Sea biome. While it is optional, it is recommended to be fought before The Devourer of Gods.

Spawning

The Old Duke can be spawned by finishing the Acid Rain event after Polterghast is defeated, appearing from a giant sulphurous tornado. It can also be summoned by fishing in the Sulphurous Sea with a Bloodworm post Moon Lord.

Behavior

The Old Duke behaves similarly to Duke Fishron at its core, though most of its attacks are entirely unique and it features distinct differences in behavior. When the Old Duke charges at the player, the direction it charges in takes the player's velocity at the time the charge began into account, aiming toward the player's predicted destination and potentially catching them off-guard.

The Old Duke is normally very resilient, with high defense and DR. However, every 10 attacks, it runs out of stamina and becomes exhausted, pausing for 5 seconds before resuming its attacks. While exhausted, the Old Duke's defense and DR are reduced to zero, leaving it vulnerable to attack.

If the player exits the Sulphurous Sea or Ocean (edge 338 tiles / 676 feet of the world), the Old Duke becomes enraged and charges at a much greater speed and distance.

Attacks

Phase 1

The Old Duke's attacks function on a set cycle, being performed in this repeating order:

  • Charges three times with short breaks in between, with the charge direction accounting for player's velocity at the time the charge began.
  • Spits five invulnerable Tooth Balls which target the player for 8 seconds, before turning themselves vulnerable and stationary after 10 seconds.
    • Killing the Tooth Ball, contacting it, or letting it live for 15 seconds will cause the Tooth Ball to erupt into 6 gravity-affected Trilobite Spikes in an even ring, along with a sulphur cloud at the center of the explosion.
  • Charges three more times, again accounting for the player's velocity.
  • Pulses, and fires 2 groups of 5 vulnerable Sulphurous Sharkrons, one group from the left and the other from right.
    • The Sulphurous Sharkrons explode into 2 damaging OldDukeGoreSulphurous Gore chunks when killed or upon tile contact.

Phase 2

Transitions at 50% / 70% Revengeance Mode / 80% Death Mode health, briefly gaining 25% DR and firing 6 Sulphurous Sharkrons upward as it does so. It gains a yellow glow in its eyes and some parts of his body, its charges and movement speed are faster, and its attack cycle is now modified:

  • Charges twice.
  • Flies in quick loops, spitting 5 Tooth Balls and forming a massive circular OldDukeVortexSulphurous Vortex which draws the player into and around it. The vortex lingers for a significant amount of time after this attack.
  • Charges twice again.
  • Summons 2 groups of 5 Sulphurous Sharkrons along with vomiting a large amount of gravity-affected Sulphurous Gore chunks.

Phase 3

Transitions at 20% Expert Mode / 35% Revengeance Mode / 50% Death Mode health. The Old Duke will become more translucent and green, gaining 25% DR during the phase transition.

Its attack cycle during Phase 3 is the same as Phase 2, though its charges and movement speed are even faster. It also gains the ability to teleport to a location nearby the player before it starts its charge series. The teleports do not count towards the Old Duke losing stamina. Additionally, the Old Duke charges three times before summoning the Sulphurous Vortex instead of twice.

In Revengeance Mode

  • Switches between its attacks faster and has increased movement speed.
  • Charges are faster in velocity and occur more frequently.

In Death Mode

  • Switches between its attacks even faster and has further increased movement speed.
  • Charges are even faster in velocity and occur even more frequently.

On the For the worthy seed

  • Spawns twice as many Sulphurous Sharkrons.
  • Vomits 40 Sulphurous Gore instead of 20 with higher spread.

Summons

Sulphurous Sharkron
Sulphurous Sharkron.png
Statistics
TypeEnemy
EnvironmentSulphurous Sea
DamageThis attack will cause defense damage on hit. 180 / 288 Expert Mode / 328 Revengeance Mode / 344 Death Mode / 432 Master Mode (Contact)
170 / 296 Expert Mode / 324 Revengeance Mode / 340 Death Mode / 462 Master Mode (Gore)
Max Life8,000 / 16,000 Expert Mode / 24,000 Master Mode
Defense100
KB Resist100%
Inflicts debuffIrradiatedIrradiated
100% chance
Debuff duration4 seconds (Contact)
3 seconds (Gore)
Debuff tooltipYour skin is burning off
Immune toConfusedPoisonedAcid VenomPearl AuraSulphuric PoisoningIrradiated
Tooth BallOld Duke
Tooth Ball (Old Duke).png
Statistics
TypeEnemy
EnvironmentSulphurous Sea
DamageThis attack will cause defense damage on hit. 180 / 288 Expert Mode / 328 Revengeance Mode / 344 Death Mode / 432 Master Mode (Contact)
170 / 296 Expert Mode / 324 Revengeance Mode / 340 Death Mode / 462 Master Mode (Trilobite Spike)
180 / 316 Expert Mode / 348 Revengeance Mode / 364 Death Mode / 492 Master Mode (Sand Poison Cloud)
Max Life5,000 / 10,000 Expert Mode / 15,000 Master Mode
Defense0
KB Resist100%
Inflicts debuffIrradiatedIrradiated
100% chance
Debuff duration4 seconds
Debuff tooltipYour skin is burning off
Immune toConfusedPoisonedAcid VenomPearl AuraSulphuric PoisoningIrradiated

Resistances

Aftermath

Tips

For elaborate strategies on defeating The Old Duke, including Weapon and Arena recommendations, see Guide:The Old Duke strategies.
  • Although the Old Duke is vulnerable during its attacks, it takes greatly reduced damage compared to the damage it takes while it is exhausted. Burst damage options such as Adrenaline and Rage in Revengeance Mode should be saved for when it runs out of stamina.
    • If the Old Duke is off-screen, listen for the distinct "huffing" sounds it makes while it is exhausted.
  • Dashing after the Old Duke's charges instead of before them can help significantly with dodging them, as this will cause it to incorrectly predict your movement.

Trivia

  • The theme that plays during the Old Duke's battle is Toxic Wisdom, which was composed by the artist DM DOKURO.
    • If the Calamity Music add-on mod is disabled, Duke Fishron will play instead.
  • The Old Duke was inspired by the Old King from Enter the Gungeon.
  • The Old Duke is sometimes referred to as "Boomer Duke" in the mod's files, referencing the meme in which older people are referred to as "boomers".
  • The tornado which appears when The Old Duke is summoned at the end of the Acid Rain is referred to as 'OverlyDramaticDukeSummoner' in the mod's files.
  • If the player attempts to summon the Old Duke using a multi-lined hook, such as the Early Bloom Rod, it will lead to multiple Old Dukes spawning in at once.
    • This is an homage to an oversight in vanilla Terraria, where multiple Duke Fishrons can be summoned using a fishing exploit.
  • The Old Duke is currently the only boss without a lore entry on the mod's official forum page.
  • The Old Duke was released on April 1st (April Fools Day) because Duke Fishron was also released on that day.
  • If the Boss Checklist Mod is installed, his unique despawn message will be "The old duke disappears amidst the acidic downpour."

BestiaryBestiary entries

  • The Old Duke: "Despite appearing old and decrepit, it clings to life. It does not seem native to the polluted sea, yet it has taken its place as its apex predator."
  • Sulphurous Sharkron: "Rotting, corpselike offspring of the Old Duke. In the Sulphurous Seas, even from birth, their appearances are wizened and decrepit."