I always felt sorry for the sidekick as a kid. They never got their due and it left a very bad taste in the mouth - they are defined by a subordinate relationship to someone else. I always felt like a bit of sidekick when I was a kid and it didn't feel fair.
I don't like allegory.
'Kraken' is set in London and has a lot of London riffs, but I think it's more like slightly dreamlike, slightly abstract London. It's London as a kind of fantasy kingdom.
Ever since I was two, I've loved octopuses, monsters, abandoned buildings.