Fatal Bug
Walks through—
Can't pass
EnergyFirePoison
Unknown.
750,000 
Unknown
Damage taken
Neutral
100%100%100%100%100%100%100%100%100%
Location
Boss room of the Adventurer Group.
Loot
28 items · sorted by chance
×35-64
Crystal Coin100%×8-18
Supreme Health Potion41%×32-58
Great Spirit Potion37%×43-65
Great Mana Potion37%×21-35
Ultimate Health Potion37%×1-2
Bullseye Potion33%×4-8
Red Gem33%×1-2
Mastermind Potion30%×4-10
Yellow Gem30%×1-2
Transcendence Potion30%×12-24
Ultimate Spirit Potion26%
Berserk Potion26%×11-24
Ultimate Mana Potion22%×61-96
Strong Mana Potion22%×1-3
Blue Gem22%
Composite Hornbow22%
Wand of Everblazing11.1%
Mercenary Sword11.1%×1-2
Giant Ruby11.1%
Traditional Sai7.4%
Ring of Green Plasma3.7%
Ring of Blue Plasma3.7%
Muck Rod3.7%
Collar of Orange Plasma3.7%
Giant Emerald3.7%
Ring of Red Plasma3.7%
Ancient Crypt Rune?
Worn Guide Book?
Crystal Coin100%×8-18Supreme Health Potion41%×32-58Great Spirit Potion37%×43-65Great Mana Potion37%×21-35Ultimate Health Potion37%×1-2Bullseye Potion33%×4-8Red Gem33%×1-2Mastermind Potion30%×4-10Yellow Gem30%×1-2Transcendence Potion30%×12-24Ultimate Spirit Potion26%Berserk Potion26%×11-24Ultimate Mana Potion22%×61-96Strong Mana Potion22%×1-3Blue Gem22%Composite Hornbow22%Wand of Everblazing11.1%Mercenary Sword11.1%×1-2Giant Ruby11.1%Traditional Sai7.4%Ring of Green Plasma3.7%Ring of Blue Plasma3.7%Muck Rod3.7%Collar of Orange Plasma3.7%Giant Emerald3.7%Ring of Red Plasma3.7%Ancient Crypt Rune?Worn Guide Book?General Properties
ClassificationUnknown.
Spawn TypeTriggered
RankBoss
IllusionableUnknown.
PushableUnknown.
PushesUnknown.
Immunity Properties
ParalysableUnknown.
Sense InvisUnknown.
Behavioural Properties
Walks AroundUnknown.
Notes
Part of The Roost of the Graveborn Quest, during the fight against the Adventurer Group, after defeating all five members. Ancient Crypt Rune can drop only after the quest has been fully completed.