This is the official helmet model for the robot KiLROY, from the novel of the same name.

This design was made by the author.

You can find the novel in the US here:
https://www.amazon.com/KiLROY-Novel-Benjamin-Camry-Long/dp/1539147568/ref=sr_1_1?ie=UTF8&qid=1476996921&sr=8-1&keywords=kilroy+a+novel

And in Canada here:
https://www.amazon.ca/KiLROY-Novel-Benjamin-Camry-Long/dp/1539147568/ref=sr_1_1?ie=UTF8&qid=1476996976&sr=8-1&keywords=kilroy+a+novel