Ghost

Ghost (ゴースト) is a monster from YGGDRASIL.

Appearance
Ghosts are ethereal undead creatures.

Abilities
Ghosts were undead that could pass through walls. They also had a specialization in hit and run tactics to touch you with their weakening touch and deal damage. Due to their intangibility they were immune to physical attacks.

Trivia

 * So far this monster is only mentioned in the Web Novel.