Hurwitz recounted how, when he actually got in touch with Weathers, the actor immediately dismissed the exact type of joke Hurwitz and the writing staff were envisioning. And not only that, but it was actually Weathers himself who came up with the running bit for his character:
"So I called Carl, and said, 'Hey, I don't know if you've seen the show but we wanna use you for it, and you'd be working with David Cross.' And he goes, 'Great, but let me ask you something. It's not going to be just a bunch of Rocky jokes is it?' I laughed, 'No! No! Give me a little credit, Carl. Of course not! It's a multidimensional character.' And he was like, 'Because I direct and I'm a funny guy and I don't wanna just do a bunch of Rocky jokes. Nobody wants that. Maybe I could be really cheap or something?' And I said, 'Whaaaat?' 'Maybe I could be really cheap?' 'Really? You'd like to do that?' 'Oh, absolutely, that's what I'm saying. I want to play someone funny, not just be a sight gag.' It was so much better. I went back to the writers room and said, 'You're not going to believe this. Carl Weathers wants to be incredibly cheap.' All credit to Carl on that."
https://www.slashfilm.com/1508464/carl-weathers-idea-for-hil...