Lip Bug is a special insect found both within YGGDRASIL and the New World.


Lip Bug is a leech, usually brightly-colored, covered in mucus secretions, with the front part of its body resembling a pair of human lips.


Lip Bug is a type of insect which consumes human vocal cords and imitate the voice of its victims. It takes practice for someone to be able to tell the difference when these bugs were most energetic based on the change in color.[1]

They were said to possess an adorable voice right before consuming their victim's vocal cords.[2]


  • Entoma lost one of her Lip Bugs to Evileye[3] and now uses Arche Eeb Rile Furt's voice as her replacement.
  • Entoma has a collection of Lip Bugs in her room.[4]
  • Ainz also possesses one Lip Bug, which he uses when going incognito as Momon.[5]


  1. Overlord Volume 10 Chapter 1: The Sorcerer Kingdom of Ainz Ooal Gown
  2. Overlord Volume 13 Chapter 5: Ainz Dies
  3. Overlord Volume 06 Chapter 9: Jaldabaoth
  4. Overlord Volume 07 Prologue
  5. Overlord Volume 07 Chapter 1: Invitation to Death
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