Scavenger Mob

Idea: "Scavenger" Mob

Spawn: Has a small chance to spawn when rainy and dark.

Appearance: Has the physical appearance of a villager, angry eyes with a balaclava on it's face.

Behaviour: Can open all doors except iron doors in around 20 seconds, and runs to the nearest chest, opens it and takes things. Just so you don't think, "Ugh I hate this idea cause all of my items will be gone!" Don't think that, because you will already have a great chance of killing it and getting the items, but it only spawns when it is rainy and when a player is in a 25 block radius of the chest that it is going to rob.

Drops: It drops the items that it stole from the chest, along with rarely giving back extra of some of the items it stole. Say you had 5 Oak Logs in a chest, it would give back the 5 logs 100% of the time, but could give 5 extra. Possibly drops the "key" which unlocks their base:

Base: The base is called, "The Scavenger Base". The only way to get it is by obtaining the scavenger's "Key", which unlocks the "Key door". "Key Door" is un-craftable, and only obtained with a silk touch diamond or netherite pickaxe. All of the blocks surrounding the base are made of a new block, called the raider wall, which can not be broken. If you rename a "Key" in an anvil, and name the key door the same thing, it will unlock that door. Once you get in the base, there will be many scavengers to defeat.

Has 10 HP like a player.