Quicksilver from OHOTMU by John Byrne & Joe Rubinstein. 1983.
John Byrne on super speed characters:
Speedsters are among the most difficult super-powered beings to portray “realistically.” Moving at super-speed, what would REALLY be going on? What would the speedster SEE, for example? (And we won’t even address, here, the fact that most speedsters, even the “slow” ones, exceed escape velocity, and should therefore be flung out into space!)
At the kinds of speeds the Flash moves, normal air would be like a wall in front of him. His own slipstream would be extremely dangerous. Friction would be a serious issue. Various explanations and excuses have been offered for these things, over the years, but they are often specific to the individual speedster. The rules that apply to the Flash (such as they are!) do not apply to Quicksilver.
I was very careful handling Pietro, the few times I did. Being a mutant, he did not have any of the “outs” that had been slipped into the Flash’s bag of tricks. He was fast because of his super muscles, and so could not claim any “auras” to protect him. Also, he could not reach anything like the Flash’s top speeds. (No running to the Sun on space dust, for instance!)
Even as a kid, I used to be troubled by the concept of Barry Allen taking a shower at super speed. Even allowing that he, himself could move really, really fast, the water would still be coming out of the shower head at normal speed. To Barry, the droplets would seem virtually suspended in mid air, at best moving incredibly slowly. Ditto when Clark Kent would use a ballpoint pen to write a note at super speed — the ink is not going to flow off that little ball any faster than normal!
The silliest of all, of course (and therefore my favorite!), was when the Flash was fighting off a cold, and took seven days worth of medicine and “rested”—- at super speed!!!