Gloom Bat

Evolving

It starts as the Gloom Batling. Beat it 150 times and it evolves for good into the Gloom Bat; 600 times and it becomes the Gloom Fiend. Each form is tougher, but worth more:

Form	Kills	Health	Damage	Gold	Rare odds
Gloom Batling	0	×1	×1	×1	×1
Gloom Bat	150	×1.4	×1.1	×1.5	×1.3
Gloom Fiend	600	×1.9	×1.25	×2.2	×1.6

Drops

Item	Qty	Chance per kill
Bones	1	20% (1 in 5)

Rare drops

Item	Chance per kill
Gloomhollow Caves Sigil	0.083% (1 in 1,200)
Wraith Skull	0.4% (1 in 250)
Ghostlight Feather	0.067% (1 in 1,500)
Gloomstone Egg	0.017% (1 in 6,000)

Rare odds rise with evolved forms, the Treasure Sense upgrade, Combat perks and some pets.

Champions

Every 12–18 kills, the next monster is a champion: 3× the health, 200% harder hits and a wind-up like a boss's, for 3 loot rolls, 4× the rare odds and 4× the gold.

Its baby

Now and then one you beat leaves its baby hiding under the rubble. Lift it gently and it's yours: the Gloom Bat. See Pets.