So, in the post-game plot with the Ultra Beasts and Looker and Anabel, Nanu refers to Looker as 100kr. I had no idea what that meant. So I googled “100kr”, and it apparently is Danish currency.
Back in X and Y, Looker counted out the five looker tickets in another language. “Ein, tvo, tri, fjore…” he said. I theorized that he was from somewhere based on Norway after a google search of that sequence.
So, at the very least, wherever his native region is, it’s possibly based on somewhere in north atlantic europe. Generation 8 confirmed?