These are Astromech Droids from Star Wars like R2-D2 and BB-8. There are R2 Units, R3 Units, R4 Units, R5 Units and BB-8 in this mod.
How to install:
- Download and install Minecraft Forge.
- Download the mod.
- Go to %appdata%.
- Go to .minecraft/mods folder.
- If the “mods” folder does not exist you can create one.
- Drag and drop the downloaded jar (zip) file into that.
- Enjoy the mod.