Mobs are listed and classified by their nature in regard to the player as below. For more details on a particular mob, click and view their individual page.
These mobs can be found in trailers or in other media, but are not in the game files and never spawn in any level and cannot be spawned in even with hacks.
Unimplemented mobs are mobs that are available in the game files, but will not appear anywhere in the game. It is not known if they will ever be added into the game.
Scrapped mobs are mobs that were in beta game but possibly scrapped mid development or were planned but not actually added. The developer said these mobs will never be added in the future.
Pets that can be summoned by the player, but are non-attackable and passive mobs in-game. These pets cannot attack mobs, but they still take damage and are affected by player auras but they won't die. Players can upgrade to Hero Pass to collect the Baby Chicken, Parrot, and Arctic Fox while they need to get the Season Pass in order to get the Baby Pig and the Baby Goat. The Parrot can also be obtained by getting only Jungle Awakens, the Arctic fox can be obtained by getting only Creeping Winter and the Baby Goat can be obtained by getting only Howling Peaks.
The special mobs are unclassified. They have special spawn generations, or have the same behavior and appearance with other mobs to make players confused.
The mobs only have their name in the game data file. Unlike unused mobs that have in-game textures, sounds, or appear in the official trailer. All of these mobs are based on mobs from various editions of Minecraft.
Some mobs from original games have new features in Minecraft Dungeons. For example, many mobs have sound files for behavior animations named "Novelty". All mobs except the Heart of Ender have animation when idle, though many don't tend to see them or document them. [3]
When mobs die, their body turns gray then fades into dust.
If the player's enchantment is used by mobs, some of the enchantment's effects would turn them purple in color. [4].
Ranged mobs tend to have more health then Melee mobs, this might be because their attack speed is very slow or their attacks deal little damage. They also tend to flee from the player when not attacking.
If any mobs were 32 blocks away from the player, their animation stops to prevent the game from crashing.
References
↑Silverfish are not only mentioned in the trailer. But, they have a walking animation in the game files only.
↑Mage was never officially added into the game, but their files were removed from the game.
↑Example, Necromancers and Enchanters throw their staffs and books in the air then catch them and celebrate.
Skeletons spin their heads around when idle. Zombies slouch over, Baby Zombies and Evokers dance in position, Cave spiders do a backflip, Vindicators look around, Husks will stretch, Redstone Golems will widen their arms and lean forward a bit and growl, though the only proof of this is through a picture from when Minecraft Dungeons was waiting to come out, as this sort of behavior from the golems is rare, [verify] and Wraiths will open their arms and lean side to side a little like the Wretched Wraith when it uses it's row projectile attack, but a little slower.