At one point Aron Kincaid, who absolutely had to have been an inspiration for Ken, quotes Spartacus saying “To those about to die, we salute you.”
Which seemed kind of bizarre and random until I saw that he played one of Laurence Olivier’s soldiers in Kubrick’s Spartacus. Which makes it even more bizarre as that means it was intentional.
But really: do a google image search of a young Aron Kincaid and try not to see Ryan Gosling’s Ken.