I'm an independent artist, but I do have a good business relationship with Lego, since I'm a unique customer. They're aware of what I'm doing. A painter may not have a relationship with a paint maker, but there's only one company that makes Lego.
I was looking to explore the theme of good and evil, so what better inspiration than the comics? I'd developed a relationship with DC and Warner Bros. when I donated a sculpture of Catwoman to the 'We Can Be Heroes' campaign a few years ago. That's what started it.