My personal headcanon for Knockout in TFP is that he doesn’t constantly fuss over his finish because he’s vain, he does it because of parasitic drag.
When you’re moving super fast, every slight imperfection, every bump or scratch is going to disrupt the airflow and bleed away your speed. Not only does he notice the reduction in performance, but he also probably feels the drag on himself too.
It’s the same thing my OC Concorde has, despite being absolutely huge he won’t fight unless he absolutely has to because any damage is going limit the speed he can comfortably fly at. Both these characters are fast (and care about being fast), that’s why it bothers them while not bothering everyone else.














