Mobs ideas

My ideas is like a mob that could fight like a iron golem rather than just two mob that is on the good side and that fight like maybe it could look like a villager with sword and armour or maybe something else that fights for you or the village cause when I was making a base I want something to protect my base to make it more cool (I made the base in creative) and you could guard but iron golem is so big and snow golem will make snow everywhere where ever he/she goes and maybe Minecraft could also add some more sea water mobs cause there isn’t that many so please add some mob under water especially some fighting mobs