According to ancient mystical lore, long before the foundations of the ancient Walled City of Kowloon had even begun to be laid - in a long-since forgotten pocket of time where an ancient evil controlled the land and magic was commonplace - the Great Council of Man made a pact with a Dark Mage...
A Dark Mage who would manifest powers beyond that of any mere mortal - to craft a leash capable of restraining even the most aggressive and unwieldy of beasts.
What they didn't know at the time however, was that 'The Dark Mage' channelling these powers was a bloke called Allen.
There's little that's dark about Allen in truth - he was simply in the wrong place, at the wrong time - and happened to be rather good with leather.
He's still in that workshop, only now it's just outside Manchester, and most of the dangerous magic has found its way out through the cracks.