This one's about as weird as they get. A (yes) mad scientist concocts a serum that he injects into a blob of protoplasm and the thing morphs into a humanoid monster that -- what else? -- goes on a killing rampage.
Nice artwork by the team of Bob Powell (pencils) and Howard Nostrand and Marty Epp (inks).
"Jelly Death" from CHAMBER OF CHILLS #6 (March 1952).