Impurity comes from a planet called Tahaoi in the Arcturus star system. His birth name was Thulani, but he changed it to Impurity once he settled on Earth, as it was his nickname given to him by his brother. He has an accent that sounds close to South African. He is a weaponsmith. He specializes in making mainly melee weapons. He decided to go to a planet called Xannic 9 for business and got imprisonned for selling illegal guns and was brought to Earth by a band of outlaws who helped him escape jail along with all the other prisoners. He is a shapeshifting slime who can only shift from feral, anthro and goo forms.