Vini

Small pale speedy humanoid creatures that eat dropped blocks and items. You can befriend them by feeding them random items but you can continue to feed it your unwanted items after you've befriended it. They are found in small houses in different biomes. Once you befriend them you have to feed them the item or leave it alone for 30 seconds. Like how you sit the dog, cat. or parrot when you tell it to stop following you it will stay within a 25 block radius of the place you told it to stay and will interact with others of it's kind. It can also open and close doors. It'd be between the size of the player and a baby humanoid.