Sub-Boss

, also known as , , , and , are more difficult variants of enemies usually encountered in .
==Characteristics==
 usually protect an item within a or other locations. Most of the time, they must be defeated to proceed within a or area.
A common characteristic that distinguishes a from a regular enemy is a particular battle theme played during the encounter, which is different from the usual enemy theme. They may return later as common enemies, likely because will have new tools and weapons to defeat them more easily. They may come in groups, as in the case of common enemies. If they are fought in a room, the doors usually lock until they are defeated.
==List of ==
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Almost every is eventually fought again as a , as they no longer guard or fragments in their later appearances.
*Blue Gohma
*Patra
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==Nomenclature==