It's pretty simple: Oda simply has to stop showing him off like an irrelevant background character. Imagine if Kaido (hybrid) defeats the SN all by himself in the next chapters and his right hand man wasn't even there... Let's hope this won't happen.
King most likely wont be there. Do not forget big meme exist lol I think Oda won't disrespect two Yonkos with make King goes up and assisting them lol