Spy novels are traditionally about lone wolves, but how many people actually live like that?
America before the 1960s was a pretty innocent place. We were the Lone Ranger galloping off to the rescue of the needy and the oppressed of the world, and we could get things done.
If ever I feel the soul within me elevate and expand to those dimensions not wholly unworthy of its Almighty Architect, it is when I contemplate the cause of my country, deserted by all the world beside, and I standing up boldly and lone and hurling defiance at her victorious oppressors.
I loved cowboy films and TV series, and I learned bits of English from them. My favorite was 'Laramie', with Robert Fuller and John Smith. I used to watch 'The Lone Ranger', which had been famous in Japan as well. I idolized these cowboys.
I like animal sidekicks. They seem to be a pretty cool trope of post-apocalyptic fiction - just because if you're going to have this lone protagonist, they're going to need someone to talk to. Dogs are overused, and cats are dumb. So that leaves monkeys.