The Rakghouls are an evil race of deformed mutated creatures in the Knights of Old Republic comic and videogame series. They were created from a Talisman made by the Sith hundred years ago that eventually ended up on Taris. Ever since then, these creatures dwell in the Undercity of Taris. They have poisonous razor sharped claws that can spread the rakghoul disease. If a sentient comes in contact with, they would become rakghouls themselves.
The rakghouls have become a threat to the planet at the start of the Mandalorian Wars. Some of Mandalorians were infected with the rakghould disease and transformed into rakghouls. The plague even reached the planet Jebble but the Mandalorians purged the disease by bombing the area.