Kid had a great moment this chapter. Took hits from Big Mom to the head (considering plenty believed he was only durable with his mecha, that's pretty impressive) and helped in disposing of her. I expect more good feats from the man going forward. He has yet to utilize that giant sword on Onigashima and his whole thing is magnetism and collecting weapons to use. All of the Supernova are strong, Oda probably didn't feel the need to show Kid so far cause he wasn't worried about him being overshadowed by Killer or anything like that cause he already had planned what he'd do with the guy.