This addon adds two mobs from the mob vote in 2017. It adds the "Monster of the Ocean Depths" and the "Hovering Inferno" that did not win. One of them are unused in Minecraft Dungeons.
This addon brings the following:
Wildfire is a type of blaze with four shields. It attacks the player by shooting fireballs and will use shockwave attacks when hit. It can also use its shields and it will be immune to melee and ranged attacks for a few seconds. Has a higher health than blazes.
The "propeller" is an ocean monster that can capture the player and drags them down (they just sink) to the bottom of the oceam. They spawn in deep oceans. Drops ink sacs when killed.
Propellers will only be able to capture players in game versions with /ride commands.
The vanilla behavior of blaze was used to make wildfires spawn in fortresses, so this addon may not be compatible with other addon that edited blaze behavior