Mark Mackner Details Cast On MovieCast On TV Name Mark Mackner Also Known As Birthday Gender Male IMDB Mark Mackner profile on IMDB Place of Birth As: Ari2016-09-01Camp Blood 666... As: Silas Killington2012-07-12Evil Brew... As: Gash Ghastly2014-10-26The Half-Life Horror... As: Silas Killington2021-11-14Daisy Derkins and th...