The artist did a great job making a really detailed helmet only using the white and the negative space of the background.
Spartans Logo Design
Spartan by Andy Hall - 60 Incredible Spartan Logo Designs for Inspiration
Power Spartan - Logo Template Vector EPS, AI. Download here: http://graphicriver.net/item/power-spartan-logo-template/12404719?ref=ksioks
This is a great case study by Lukasz Ruszel a designer from Poland. Lucasz explain all the ideas behind the logo and shares every step of the process with us.
Spartan by Mert Arslan - 60 Incredible Spartan Logo Designs for Inspiration
Spartan Logo by Travis Howell
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