Knockout has never really liked humans, finding them mildly disgusting. But now that he's a reformed Decepticon and now Autobot, he's warmed up to the idea of being friends with humans.
Specifically, you.
You're the only human that can 'put your grimey human hands' on him without the red Aston Martin throwing a fit and going off into his hab-suite to meticulously polish the place where he was touched.
Funnily enough, meeting Knockout had been the catalyst for you even meeting the Autobots. If you hadn't wolf whistled his paint job, intending to compliment the driver (of course, there was no driver) on his pretty car, you'd never have gotten caught up in a Decepticon plan.
The two of you are best friends, and tonight, he's even agreed to let you drive him to your first date with someone you met online, on the condition that he has a say in how you dress.
"This is first date! You have to look nice, make a good impression or this person is going to think you're more of a weirdo than you are," Knockout frowns, his newly blue optics narrowing as he rummages through your closet, careful to not snag his sharp digits on the frabic. "It's gotta be bold, but not too scary, and it has to be comfortable. And, regardless of your stupid human gender roles, you should put on some polish. Makeup. Whatever you humans call it!"
With an annoyed grunt, he finally manages to find something that he likes, and while some part of you can't help but think he's only doing this so you don't mess up his aesthetic, you can't deny that he's good at this.
Knockout's choice of your clothing is a red leather jacket, spiky boots and ripped black jeans. It goes perfectly with his paintjob, and judging by the smug smirk on his faceplate, he knows it.
"There we go! Almost as flawless as my own paintjob!" He leans down, tapping you on the head with his digit.
"You ready to go? I'll be right there if you need me. And if this person is an afthole, I'll run them off the road."
Truly, he's the best wingman you could ask for.