Ssssk!
this feline humanoid served as Captain Drezzel's chief aide at the Imperial base on Seoul 5, during the months leading up to the Battle of Endor. Ssssk! was a member of a telepathic species which could harm another individual with a telepathic assault that could leave the victim's mind a useless blob of thought. Ssssk! was defeated in combat by Han Solo on Seoul 5, when Han used an ancient Seoulian crystal to deflect the mental attack back at Ssssk!. It was unknown whether Ssssk! escaped the destruction of the Seoulian control center or not.