The Six-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 Six-Star Earthling Dragonball to crack, releasing the Shadow Dragon, Oceanus Shenron.
The Shadow Dragon of the Cracked Six-Star Earthling Dragonball. She was born from Oolong's wish for panties from a hot babe.