Core Keeper Boss Scanners: Full List and How to Use Them

Summary

What does a scanner do?

Shows a boss on your map
Each scanner "scans the world" for one boss (game text) and reveals that boss's marker on your map (the game's patch notes call these "scannable map markers"). Use it when you cannot find the boss.
Used up only on success
The item description says it is "Consumed on successful scan." A scan that does not succeed does not use it up.
Scan again after a kill
For most bosses, the scanner has to be used again after the boss is defeated if you want its marker back.

All boss scanners (and where to get them)

Scanner	Boss it finds	Main sources
Ghorm the Devourer Scanner	Ghorm the Devourer	See how to get it
Malugaz the Corrupted Scanner	Malugaz the Corrupted	See how to get it
Hive Mother Scanner	The Hive Mother	See how to get it
Azeos the Sky Titan Scanner	Azeos the Sky Titan	See how to get it
Ivy the Poisonous Mass Scanner	Ivy the Poisonous Mass	See how to get it
Morpha the Aquatic Mass Scanner	Morpha the Aquatic Mass	See how to get it
Omoroth the Sea Titan Scanner	Omoroth the Sea Titan	See how to get it
Ra-Akar the Sand Titan Scanner	Ra-Akar the Sand Titan	See how to get it
Igneous the Molten Mass Scanner	Igneous the Molten Mass	See how to get it
Druidra the Wild Titan Scanner	Druidra the Wild Titan	See how to get it
Crydra the Ice Titan Scanner	Crydra the Ice Titan	See how to get it
Pyrdra the Fire Titan Scanner	Pyrdra the Fire Titan	See how to get it
Oblidra the Void Lord Scanner	Oblidra the Void Lord	See how to get it
Atlantean Worm Scanner	Atlantean Worm	See how to get it
Nimruza, Queen of the Burrowed Sands Scanner	Nimruza, Queen of the Burrowed Sands	See how to get it
Urschleim Scanner	Urschleim	See how to get it
S.A.H.A.B.A.R. Scanner	S.A.H.A.B.A.R.	See how to get it
Core Commander Scanner	Core Commander	See how to get it

How to use a scanner

Put the scanner on your hotbar, select it and use it.
If the scan succeeds, the scanner is used up. Check your map for the boss's location.
If there is nothing to find, your character says "Nothing was found" and you keep the scanner.
Head toward the marker on the map (how to use the map).

Most scanners need to be used again after you defeat their boss. For the order to fight bosses, see boss order.

Finding structures (scenes): echo maps

Scanners that reveal a specific structure instead of a boss are called echo maps (echo map types and how to use them).

Which boss each scanner finds is read from the scanner prefabs in the game files (Core Keeper 1.3.0.6). How scanners behave is taken from the game's own item descriptions, patch notes and the “Nothing was found” emote text. That most scanners must be used again after the boss is defeated is from the Core Keeper Wiki (Fandom) page “Scanners” (CC BY-SA 3.0).

Unless a note on the page says otherwise, numbers are read from the game files of Core Keeper 1.3.0.6 (prefabs, configuration files, drop tables and the game's program) and calculated by this site, including upgraded (per-level) values, sell prices and mana costs. Names and descriptions are the game's official English text. Only reinforcing materials, minion and pet attacks and some food values are based on the Core Keeper Wiki (Fandom) data (CC BY-SA 3.0). Core Keeper and its images are © Pugstorm. This is an unofficial fan site.