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In IdleOn, you can find several Mini Boss monsters throughout all the worlds, with many of them dropping useful items like Time Candies and Gems! This guide will show you all of their locations, how you can summon them and what useful items they might drop when defeated.
- World 1 - Blunder Hills - Mini Bosses
- World 2 - Yum Yum Desert - Mini Bosses
- World 3 - Frostbite Tundra - Mini Bosses
- World 4 - Hyperion Nebula - Mini Bosses
- World 5 - Smolderin' Plateau - Mini Bosses
- World 6 - Spirited Valley - Mini Bosses
Mini Bosses are not only useful for the items that they drop, but they also count towards you Deathnote kills, giving all worlds a Multikill bonus.
If you have the Revenge of the Pickle upgrade from the Jade Emporium, for each BoneJoePickle item in your Inventory, it will count as an extra kill towards your Deathnote score.
BoneJoePickle is purchased from the World 6 shop in Spirited Valley.
World 1 - Blunder Hills - Mini Bosses
There are three mini-bosses you can find in World 1.
All of these mini-bosses have a spawn timer, so you'll have to wait several hours in between kills.
You can also fight Baby Yaga in the Dewdrop Colosseum.
| Boss | Stats | Spawn | Notable Drops | Notes |
|---|---|---|---|---|
 Glunko the Massive |
10,000 HP | Blunder Hills / Jungle Perimeter |   |
Spawns every hour |
 Baby Yaga |
150,000 HP | Blunder Hills / Birch Enclave |  |
Spawns every 24 hours |
 Dr. Defecaus |
745,000 HP | Blunder Hills / The Office |   |
Spawns every 24 hours |
World 2 - Yum Yum Desert - Mini Bosses
World 2 has two mini bosses but unlike World 1, these bosses require special requirements to summon them.
Both of these bosses also drop Gems for the Gem Shop.
You can also fight Biggie Hours in the Sandstone Colosseum.
| Boss | Stats | Spawn | Notable Drops | Notes |
|---|---|---|---|---|
 Biggie Hours |
800,000 HP | Yum Yum Desert / The Mimic Hole |       |
To spawn Biggie Hours, you need to craft a Googley Eyes item. This requires:
The Recipe for Googley Eyes drops from Crabcake. You then need to drop your Googley Eyes on the broken Sand Timer at The Mimic Hole to spawn the mini-boss. |
 King Doot |
3,000,000 HP | Yum-Yum Desert / Sands Of Time |   |
To summon King Doot, you need to do two things. First, you need to craft a Dootjat Eye. This requires:
The Recipe for Dootjat Eye drops from Sand Giant Next, you need to form a Party of three classes: One Warrior, One Mage and One Archer. This will create a portal; inside you'll find three stone pillars; have each party member stand in front of their stone pillar depending on their class and type something. |
World 3 - Frostbite Tundra - Mini Bosses
There is only one mini-boss in World 3. This boss requires an item and also has it's own limited spawn timer.
You can also fight Dilapidated Slush in the Chillsnap Colosseum.
| Boss | Stats | Spawns | Notable Drops | Notes |
|---|---|---|---|---|
 Dilapidated Slush |
12,500,000 HP | Frostbite Tundra / Refrigeration Station |    |
To spawn Dilapidated Slush, you need to craft the item Bucket Of Slush. This requires:
The Recipe for Bucket Of Slush drops from a number of different mobs.
Next head to Refrigeration Station and drop your Bucket Of Slush on the snow pile to summon the boss. Dilapidated Slush can only be summoned once every 4 days. However, this will stack if you do not summon him for a while, up to 10 Dilapidated Slushes. Each time the mini-boss is ready to be summoned, the next amount of time for it to stack increases. |
World 4 - Hyperion Nebula - Mini Bosses
The World 4 mini-boss works exactly the same as the World 3 mini boss.
You can also fight Mutated Mush in the Astro Colosseum.
| Boss | Stats | Spawns | Notable Drops | Notes |
|---|---|---|---|---|
 Mutated Mush |
120,000,000 HP | Hyperion Nebula / Spaceway Raceway |     |
Similar to Dilapidated Slush, this mini-boss can only be summoned once every 4 days and stacks the longer you leave it, up to a total of 8 mini-bosses.
|
World 5 - Smolderin' Plateau - Mini Bosses
The World 5 Mini Boss doesn't require any items to summon it- Yay! But it does have a spawn timer similar to the World 3 and 4 mini-bosses.
You can also fight Domeo Magmus in the Molten Colosseum.
| Boss | Stats | Spawns | Notable Drops | Notes |
|---|---|---|---|---|
 Domeo Magmus |
1,000,000,000 HP | Smolderin' Plateau / The Killer Roundabout |     |
The rocks spawn every 4 days, but stacks over time. |
World 6 - Spirited Valley - Mini Bosses
There is also only one mini-boss in Spirited Valley.
You can also fight the Demented Spiritlord at the Whimsical Colosseum.
| Boss | Stats | Spawns | Notable Drops | Notes |
|---|---|---|---|---|
 Demented Spiritlord |
25,000,000,000,000 HP | Spirited Valley / Troll Broodnest |   |
The Demented Spiritlord can only be summoned once every 4 days, but stacks over time. |
And that's all the mini-bosses you can currently find in IdleOn!
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