Mercuryball

Mercuryball is the smallest Planetball of the solar system. It is s of best friends with Sunball, being the closest, though Sunball burns him badly. He is tidally locked meaning one side faces the sun all the time, so one side of him is about 420°C, while the other side is always -150°C

Mercury orbits the Sunball in only 88 Earthball-days.