The Two-Star Earthling Dragonball is one of the Earthling Dragonballs.
Started cracked in Dragonball Xz.
After the Dragonball was restored, dark TRUNKS used it with the others to summon Shenron.
Scattered across Earth somewhere.
Due to their overuse, the negative wish energy within the Earthling Dragonballs caused the Two-Star Earthling Dragonball to crack, releasing the Shadow Dragon, Haze Shenron.
The Shadow Dragon of the Cracked Two-Star Earthling Dragonball. He was created from Goku's old friend, Upa, when he wished his father back to life.