Terraria Mods Wiki
Arlenon (Jetshift).png
AI TypeArlenon AI
Damage25 / 35
Max Life18,700 / 26,100
Defense19 / 26
KB Resist100%
  • Item (Quantity)Rate
  • Jetshift/Unheavenly SightUnheavenly Sight(Jetshift)
Arlenon Map Icon (Jetshift).png
Map Icon

Arlenon is a Hardmode boss that is fought at Sky altitude. She is particularly difficult for unarmed players, so preparation has to be made before taking her on.


Arlenon does not spawn on her own and is summoned with the Pearl of the Sky at Sky altitude, close to Space.


Arlenon hovers above the player(s) and shoots projectiles at them. Occasionally, she will stop to fire rings of Harpy Feathers before summoning Skyeyes to assist her in battle. Alongside this, she will try to trap the player by summoning a tornado and dashing into them. This tornado cannot hurt the player for 1 second upon spawning to prevent cheap hits.


  • While Arlenon is supposed to be fought at high altitudes, she can be lured anywhere in the world with no consequences.


  • Don't fight Arlenon near Space as the low gravity will greatly reduce your mobility.
  • Using a Unicorn Mount will allow players to get away from her dash attacks.


  • Arlenon's theme is Unheavenly Sight composed by Shadow Figure.
  • Arlenon replaces King Edrol, who was a large floating head with a crown on that had a moveset similar to Ice Queen.
Serpent's Greatblade (Jetshift).png Weapons • Serpent's Helmet (Jetshift).png Armor • Heart of Acceptance (Jetshift).png Accessories • Unstable Pickaxe (Jetshift).png Tools • Hell Brick (Jetshift).png Blocks • Astral Destabiliser (Jetshift).png Furniture • Unstable Fragment (Jetshift).png Crafting materials • Legendary Scroll (Jetshift).png Miscellaneous
Cursed Rune (Jetshift).png Mechanics ( Cursed Wall (Jetshift).png Achievements • Shift (buff) (Jetshift).png Buffs )
Quaker (Jetshift).png NPCs ( Wall Clinger (Jetshift).png Enemies • Wordsmith Map Icon (Jetshift).png Town NPCs • Unstable Cosmic Star (Jetshift).png Minibosses • Shadowflight Dagger (Jetshift).png Bosses)
Dark Snow (Jetshift).png Biomes