Abaddon

Location: Twilight
Level: 15
Difficulty: 2 stars
Total HP: 18,130
Attacks:

• Downward Slash: 130-165
• Slash: 129-160

Temporary Items Dropped:

• DoomKnight Armor Piece (Dropped during the 'Pinpoint the Pieces' quests)
• Dreadspider Staff (Dropped during the 'Understaffed' quest)
• Evolution of Awe (Used in the 'Awe of Evolution' quests) (Must have completed the 'Find the Runes!' quest)
• Rare Unidentified Broom (Dropped during the 'Tuesday... Broom of Doom!' quest)
• Sticky Spider Silk (Dropped during the 'Sticky Situation' quest)

Items Dropped:

• Abaddon Curse
• Abaddon's Terror
• Abbadon's Abide (Dropped during the 'Forge Gemstones for Nulgath' quest)
• Arachnid Voracities of Nulgath
• Balor's Brutality
• Balor's Cruelty
• Black Spider
• Dark Energy (Misc)
• Dread Staff
• Fiendish Arachnomancer Helm
• Fiendish Arachnomancer's Claws
• Fiendish Arachnomancer's Dorsal Whips
• Fiendish Arachnomancer's Minion
• Fiendish Arachnomancer's Parasite
• Fiendish Arachnomancer's Tick Ghilly
• Mystic Parchment
• Mystic Quills
• Nation Arachnomancer
• Treasure Chest (Misc)

Notes:

• Inscription on shoulder and legs translates to "M" while weapon translates to "MILTONIUS".
• Also see:
  • Breken the Vile.
  • Crystal Mana Construct.
  • Gemstone Elemental.
  • Gressil.

Thanks to Captain Graarg, cornfield10, GENGSTUPID, Nightly, Stephen Nix and Tendou no Mazo.