So in Minecraft we have a variety of hostile mobs such as zombies, skeletons, creepers spiders etc. These have been in the game since the very early stages. Well why not add different variety for each of them. I am aware the zombie has 4 different varieties, (Zombie, Husk, Drowned and Zombie Pigman) which is why I am leaving that out of this list today. But why not add more skeleton and spider varieties? I did some brainstorming and here are a few ideas I had:
Skeleton: It could be unique to the swamp as they dont have much going on in the water apart from lily pads. The skeletons could be wearing worn down, old suits. Instead of running away from wolves, they could fight them. But they are scared of parrots. They could also have arrows of poison which they use for defending themselves. They also spawn in water or next to a boat. They can also swim like the drowned. They would also be 0.25 times faster than other skeletons. A name for this could be "Meeted" kind of like Drowned.
Cave Spider: as this mob is only found in mineshafts, why not have them spawn when y=36 or under and the further down you go, the faster and more dangerous they become. Whenever they are hurt or damaged by a player, they have 1 in 10 chance of spawning a cobweb.
I am still thinking of a way for creepers to become more useful but I will update this suggestion once I have come up with one. I feel like something similear to this should come because at the moment, not many biomes have that many exclusive things. I feel like existing biomes need an update with exclusive things.