Kist Magg Thek Lutiven-Day Slitheen

Kist Magg Thek Lutiven-Day Slitheen (also known as Tim Jeffrey') is a member of the Slitheen Family, Korst Gogg Thek Lutiven-Day Slitheen's father, Glune Fex Fize Sharleveer-Slam Slitheen's brother and a antagonist in The Sarah Jane Adventures episode Revenge of the Slitheen.