Dica, a poisonous planet, is where it's thought that Qymaen jai Sheelal, more famously known as General Grievous, committed the murder of a Dark Jedi in possession of Bane's Heart.
Due to elevated acid concentrations, this desolate, overcast world was almost completely devoid of life. It once supported various Space slug species, but they eventually died off because of the increasing acidity. The terrain was riddled with acidic lakes and puddles. On the world's surface, Grievous engaged in combat with the Dark Jedi Kaa and Lii.