I always thought he's gonna be Fuji's counterpart but did not expect him to be this extreme
I like that he's not dogmatic, he's the opposite of that in every meaning of the word. He just understands how the world works in the simplest of ways. He's not doing anything that violates his contract, Wano is non-affiliated thus he can do whatever he wants.
He doesn't give two shits about the celestial dragons, only about his bank statement. The moment his contract ceases he'd have no problem washing the holy land if you give him something in exchange.
That's how I see it. Greenbull is based af.