Glune Fex Fize Sharlaveer-Slam Slitheen (also known as Greg Blakeman) is a member of the Slitheen Family, the brother of Kist Magg Thek Lutiven-Day Slitheen, the uncle of Korst Gogg Thek Lutiven-Day Slitheen and an antagonist in The Sarah Jane Adventures episode Revenge of the Slitheen.


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