Calamity Mod Wiki
Jungle Dragon, Yharon
Jungle Dragon, Yharon.png
AI TypeJungle Dragon, Yharon AI
Damage330 / 528 / 660 / 759 (Contact)
180 / 300 / 332 / 348 (Flare Bomb)
200 / 340 / 376 / 396 (Flarenado)
300 / 520 / 548 / 564 (Infernado)
180 / 300 / 332 / 348 (Phase 1 Flare Dust)
250 / 440 / 464 / 476 (Phase 2 Flare Dust)
250 / 440 / 464 / 476 (Splitting Fireball)
300 / 500 / 550 / 632 (Death Flare Bomb Ring)
Max Life1,085,000 / 1,736,000 / 2,080,000
KB Resist100%
Inflicts debuffDragon FireDragon Fire
100% chance
Debuff duration3 seconds (All projectiles except Flarenado and Infernado)
5 seconds (Flarenado)
7 seconds (Infernado)
Debuff tooltipLosing life, reduced movement speed
Immune toConfusedPearl AuraOn Fire!

Yharon Trophy.png "The loyal guardian of the Jungle Tyrant" Yharon Trophy.png

Jungle Dragon, Yharon is a major post-Moon Lord boss fought in the Jungle. The player should be well equipped and prepared before summoning him as the boss is incredibly challenging.

Defeating Yharon will provide the player with Yharon Soul Fragments and generate Auric Ore in the world, granting the player access to one of the highest tiers of equipment.


Yharon does not spawn on his own, and requires the player to summon him by using the Jungle Dragon Egg while in the Jungle.


Yharon is incredibly fast and deadly, almost always charging the player at high speeds, dealing an extreme amount of contact damage. Between these charges, he will also perform a plethora of other deadly attacks, from firing a variety of projectiles, summoning many lingering Flarenadoes and Infernadoes, and spawning several minions to fight alongside him.

At the start of the fight, Yharon will summon two massive stationary flame pillars 218.75 / 187.5 / 125 blocks to the left and right of the player (measured from their centers) to serve as arena borders; Hence, the pillars will not be perfectly centered on the player's current position. Touching the flame pillars will deal massive damage, and successfully leaving the arena or flying above Yharon's designated enrage height (660 blocks high) will cause Yharon to become enraged, which massively increases his speed and quintuples his damage until the player returns.

Yharon's charging speed is adjusted based on his distance from the player, meaning that he is difficult to outrun and he can quickly approach the player from anywhere in the world.


Phase 1

Subphase 1
  • Charges twice consecutively.
  • Spawns a line of FlareBombFlare Bombs which start slow, but rapidly accelerate and home in on the player, however cannot turn very well.
  • Charges once, and does a fast charge, in which he goes twice as fast and far.
    • Yharon will remain stationary for a second and roar before he performs his fast charges. During this telegraph he gains 40% damage reduction.
  • Creates two FlareFlare Tornado projectiles, which fall to the ground diagonally away from him. Upon contact with a tile or after not hitting a tile for a second, a large Flarenado is spawned.
  • Upon reaching 75% / 85% / 90% health, Yharon transitions to his second subphase.
Subphase 2
  • Charges twice, waits, and then once quickly.
  • Teleports above the player, and flies repeatedly in a circle, shooting FlareDustFlare Dusts out in a bullet-hell style circle pattern, with random openings of various sizes.
    • Yharon does not deal contact damage during his bullet-hell style attacks and gains 40% damage reduction.
  • Waits for 3 seconds after the flare dust rings and then does 2 slow charges at the player.
  • Flies in a loop, creating a ring of FlareDust2Homing Flare Dusts that seek toward the player's initial position after a long delay.
  • Creates a BigFlareBig Flare Tornado which homes in on the player. Upon contact, a massive Infernado appears at the player's position.
  • Upon reaching 62.5% / 70% / 75% / 80% health, Yharon transitions to his third subphase.
Subphase 3
  • Charges once normally and then twice quickly.
  • Flies in a loop, creating a ring of Homing Flare Dusts that seek toward the player's initial position after a long delay.
  • Spawns a line of flare bombs, which fly towards the player, attempting to deal damage by ramming them or shooting giga flares, in the flame's cases.
  • Does one normal, then one fast charge.
  • Creates a homing Flare Tornado, which spawns a Flarenado upon impact.
  • Teleports near the player, and flies repeatedly in a circle, shooting flare dusts out in a different bullet-hell style star-shaped pattern.
  • Upon reaching 55% health, Yharon transitions to his second phase.

Phase 2

"The air is getting warmer around you."

  • Infernados in this phase are smaller and last for a longer amount of time.
Subphase 4
  • Summons a BigFlareBig Flare Tornado that homes in on the player.
  • Charges twice normally again before flying horizontally while releasing a wall of Homing Flare Dusts that seek toward the player's initial position after a long delay.
  • Charges twice quickly before flying horizontally while firing several gravity-affected YharonFireballYharon Fireballs that, after falling for long enough or upon contact with tiles, quickly launch three Yharon Fireballs into the air that rain back down. These resulting Yharon Fireballs do not split.
  • Charges twice normally once more and then flies in a loop, doing the flare dust bullet hell.
  • Upon reaching 27.5% / 38.5% / 44% health, Yharon transitions to his fifth subphase.
Subphase 5
  • Uses several fast charges in place of the short charges.
  • The flare dust bullet hells and the wall of homing flare dust are switched in his attack pattern.
  • Upon reaching 13.8% / 22% / 27.5% / 35.8% health, Yharon transitions to his sixth subphase.
Subphase 6
  • The flare dust rings are now in the star-shape seen in subphase 3
  • Similar to previous subphases with the new inclusion of teleports that occur right before a fast charge.
  • All charges in the subphase are fast.

When Yharon is killed, a large ring of FlareDust2Flare Bombs is released at his death point. These travel outward before detonating after a few seconds to allow safe retrieval of Yharon's loot.

In Expert Mode

  • Yharon gains an attack at the beginning of subphase 4, 5, and 6, in which he spawns 3 massive rings of flare dust that home in on the player after 3 seconds.
  • Yharon switches between his attacks at a faster rate.
  • Yharon transitions into subphase 2 at 70% health, and subphase 3 at 40% health.
  • Yharon transitions into subphase 5 at 70% health, and subphase 6 at 40% health.
  • Yharon's charges are faster and done in much faster succession.

In Revengeance Mode

  • Yharon gains a new subphase when below 11% / 16.5% health:
    • Teleports to one side of the player, then does 2 fast charges, with both having a shorter telegraph.
    • Teleports near the player and does the flare dust bullet hell, and waits for 3 seconds before repeating.
    • All attacks deal 10% more damage.
  • Yharon's enrage height is reduced to 555 blocks from the spawning position and the border pillars spawn 187.5 blocks away from the starting position.
  • Yharon transitions into subphase 2 at 80% health, and subphase 3 at 50% health.
  • Yharon transitions into subphase 5 at 80% health and subphase 6 at 50% health.
  • Charges and teleports closer to the player.

In Death Mode

  • Yharon has decreased delays between attacks.
  • Most of Yharon's slow charges are replaced with fast charges.
  • Yharon spawns in subphase 2, and in subphase 5 after Phase 2 begins.
  • Yharon transitions into subphase 3 at 60% health.
  • Yharon transitions into subphase 6 at 65% health and subphase 7 at 30% health.
  • Yharon launches more fireballs during his second phase.
  • Summons more Infernadoes in place of Flarenadoes.

In Malice Mode

  • The border pillars spawn 125 blocks away from the starting position.
  • Attacks and charges become much faster.
  • Density and speed of bullet-hell attacks increases as Yharon loses health.


Once Yharon is defeated, the following things happen:


  • Yharon's enrage works differently from other bosses, as it is pre-determined from where the player stands when using the Jungle Dragon Egg. That number is 660 blocks in height in Normal and Expert mode and 555 blocks high in Revengeance and Death Mode.
  • If Yharon is enraged and not on screen in his second phase, he will despawn in exactly 2.5 seconds.
  • Flarenadoes and Infernadoes will not deal damage for a short period after spawning, to prevent cheap hits on the player.
  • While Yharon is alive, the world is colored deeply with orange. This will only happen if the Lighting option in the Settings Menu is set to "Color" or "White".


For more elaborate strategies on defeating Yharon, including weapon and arena recommendations, see Guide:Jungle Dragon, Yharon strategies.
  • Always be cautious when moving horizontally, as the arena flame pillars will instantly kill the player without warning.
    • It is advisable to put up solid blocks in front of the pillars to prevent accidentally contacting them. Because the places of the pillars are measured from their bottom-left corners, the actual block to summon Yharon is not in the center of the arena. The arena should have a height of 660 / 555 blocks and a width of 311 / 253 blocks. The block to summon Yharon needs to be the 128th / 100th block from the left wall. This will ensure the player never touches the pillars.
  • A good tactic to avoid Flarenadoes is to fly to the edge of the arena and let the Detonating Flames hit you, dealing no damage to you and forcing the Flarenado to spawn out of the way of the fight.
  • Using a dash accessory that deals damage, such as the Elysian Aegis or Asgardian Aegis, can be very vital against Yharon when he's charging as he will take damage and deal no contact damage when the player is dashing.
  • The Rod of Discord or Normality Relocator are great tools to use during the fight to avoid the flarenados and some of his attacks.


  • Yharon's first phase theme is Infernal Catharsis (Rebirth), which was composed by the artist DM DOKURO.
    • If the Calamity Music add-on mod is disabled, Boss 3 will play instead.
    • This theme is a remake of Infernal Catharsis, which is now Music Box exclusive, and was also composed by DM DOKURO.
      • This is the only theme that is not on DM DOKURO's official album. This is because when he made the "Rebirth" version, it was intended to replace the original one (and has).
      • Prior to the release of the original Infernal Catharsis, Yharon's theme was Kyurem's theme from the game Pokémon Super Mystery Dungeon.
  • Yharon's second phase theme is Roar of the Jungle Dragon, which was also composed by DM DOKURO.
    • This song contains full lyrics sung by DM DOKURO himself. The song is a warning from Yharon to his master, Yharim, about the strength and unstoppability of the player character. The song's lyrics are considered non-canonical to the mod's official lore.
    • If the Calamity Music add-on mod is disabled, the Moon Lord's theme will play instead.
  • The firewall borders in the fight are based on an attack used by Senator Armstrong from the game Metal Gear Rising: Revengeance.
  • Yharon's design took heavy inspiration from Falzar from the Mega Man Battle Network series.
  • Yharon was previously known as "Jungle Phoenix, Yharon".
  • Yharon used to have a 4th subphase in phase 1, however this was removed in update
  • Yharon can be fought before fighting any other post-Moon Lord bosses, as the Jungle Dragon Egg's recipe requires no post-Moon Lord materials except for Effulgent Feathers.
  • The Dragonfolly is a failed clone of Yharon.
  • Before, Yharon had to be fought on two different occasions. on the first fight, he would fly away at 10% health and buff Solar Eclipses (which are now buffed post-Devourer of Gods). on the second fight, Yharon would reach 10% health and regenerate back to 90% health, in which the second phase began.
    • Yharon would use Infernal Catharsis (Rebirth) as his theme during the first fight, and the original Infernal Catharsis would play during phase 1 of the second fight. He still used Roar of the Jungle Dragon as his second phase theme.
    • Auric Ore would only generate after defeating the second phase.
  • If the Boss Checklist Mod is installed, his unique despawn message will be "Yharon found you too weak to stay near your gravestone."
  • Alongside the Devourer of Gods, Yharon is one of two boss who's theme completely switches when changing phases.


Yharim grew up with no one besides his monstrous cohorts to keep him company after the passing of (nearly) his entire family...with the exception of his loyal dragon guardian, Yharon. Long ago, a powerful ranger found an egg within the depths of the Jungle Temple. She gifted the egg to her son, Yharim, to raise as a companion while she was away on her missions. Before the egg hatched it was tossed into the underworld lava, along with Yharim's entire family due to the arrogance and despicable nature of the elder brother. However, the heat of the lava only caused the young dragon to mature more quickly. Soon, it hatched into a furious beast, and was able to save Yharim from his demise, though the same could not be said for the rest of his family. Badly burned and filled with hatred and contempt, Yharim slowly crawled onto the back of his faithful companion. The dragon comforted him as best it could before Yharim commanded that they return to the temple, a new power and order was about to rise. From there the dragon aided Yharim in annihilating the corrupt leaders of the jungle and putting the power in the hands of someone with a broken heart and many scars. The dragon was more than just a mere friend to the tyrant, the warmth and light from the dragon's soul often comforted the tyrant king in times of great depression. Without his pet, the tyrant would've been dead long ago.

See also