At the convention, he explained: “I thought the first couple of years that we knew Negan was very one-dimensional.
“To me, when Negan came out of the RV for the first time, we didn’t learn anything about him for two years, three years. And that was hard.”
He went on to say that Negan wasn’t properly introduced until his relationship with Judith (Cailey Fleming) began.
Jeffrey went on: “I felt like everything that I said coming out of that RV is sort of what I said for the next two years, and never shifted.
source: express.co.uk