So Seungmin and Lee Know could kill people

I will have to disagree a bit, Lee Know fits in the "Looks like they could kill you... It's a cinnamoroll" alongside Chan

King has the tsundere vibes, seems intimidating and cold, but he's soft inside even If he denies

Seungmin, on the other hand, looks cute, but he's a troll

You need to hang out on the sides of the internet that aren’t like that or learn to ignore it. You might not like that answer but you’ll run yourself into the ground trying to make internet randos, whose opinion you shouldnt really care about btw, care about the thing or person you care about BUT I suppose if you’ve got the time then by all means, yo, do you.