Minecraft Dungeons:Boss

A boss is a mob that can be found within a boss arena within the various missions of Minecraft Dungeons. Out of the thirty-nine (39) total missions, Ten of them have bosses. Usually, only one final boss can appear within each mission, but two appear within the. The flames of the nether is the only DLC without bosses, because the Orb of Dominance is not present within it.

List
Bosses accessible on the Mainland continent as well as non-DLC bosses.
 * Mainland bosses:
 * &mdash; An Illager with a sideways head. Appears in all non-DLC missions to summon Ambushes and Bosses, but isn't attackable until the is reached where he can be fought.
 * &mdash; A corrupted, golem-like cauldron within the.
 * &mdash; A large creature similar to an with six tentacle-looking arms. It is created after the Arch-Illager is sucked inside the . It is the final boss in the main game, not counting those found in the DLCs or the secret boss.
 * &mdash; A golem made of stone and redstone patches, as well as mushroom spores, sprouting out of the it's body.
 * &mdash; A large and stronger  variant. It dwells within the . It also has a staff with a green orb on the top.
 * &mdash; A monstrous stone-and-redstone machine built within the.
 * — A whisperer ensnared by the remnants of the orb's corruption upon the treetop tangle of the Jungle Island.

Bosses exclusive to the Island Realms or the Other Dimensions.
 * DLC bosses:
 * &mdash; The most ancient of  that was corrupted by a shard of the orb. It resides within the.
 * The version of the Ancient Guardian before the fight is called the Fake Ancient Guardian.
 * &mdash; An overgrown monstrosity made up of various objects ranging from plant matter to debris to house a shard of the orb. It resides within the.
 * &mdash; The timeless sanctuary protector of the.
 * &mdash; It is the final boss of the ultimate edition of the game, and resides within the.
 * The version of the Vengeful Heart of Ender is called the Imperfect Heart of Ender.
 * &mdash; An that was corrupted by the Orb, proceeding to spread a creeping winter throughout the . It dwells within the.

Bosses exclusive to the Arcade version of the game.
 * Arcade bosses:
 * &mdash; A larger and enhanced variant that was given power thanks to the, and lurks within the.
 * &mdash; A larger and enhanced variant that was given power thanks to the, and dwells on the.
 * &mdash; A large, colossal golem made of stone and powered by crying obsidian-like blocks, and resides atop the.

Some powerful mobs were once able to appear as a boss within specific missions.
 * Other bosses:
 * &mdash; a boss within the Coral Rise, the Radiant Ravine, and the Abyssal Monument.
 * &mdash; a boss within the Pumpkin Pastures, Colossal Rampart, Woodland Prison and Woodland Mansion.
 * &mdash; a boss within the Basalt Deltas and the Crimson Forest.
 * &mdash; a boss within the Frosted Fjord, the Lost Settlement, and Colossal Rampart.
 * &mdash; a boss within the Redstone Mines.
 * &mdash; a boss within the Abyssal Monument.

Trivia

 * The developers posted on Twitter various different titles and names each boss has.