Early Engineer concepts much more scary-looking

On the Blu-Ray extras in the 'Art of' section under 'creatures' there are some early Engineer designs and some of them are of just the head and neck with a much more weathered look with larger craniums, staring eyes and Frankenstein-like features. They are truly scary looking. Maybe someone can post a pic here of the ones I mean - the likeness is of a cross between Michael Berryman of 'The Hills Have Eyes' and 'Lurch' 'from 'The Addams Family'. Maybe Ridley Scott was referencing these early designs when he promised to "scare the living s**t out of us".