Len understood better than most what it meant to come to your friend's aid when they were in the middle of a fight. The only problem with the patrons' plan was that Len's friend was better than them-- and Mark and Len had been fighting side by side for some years now. They knew how to handle themselves in a tussle; be it with a super-powered crime fighter or a simple bar brawl.
He didn't bother asking Mark if that quote was Twain (they were always Twain). Broken-Nosed Patron crumpled to the ground, clutching his face. The next comer swung high for Len's temple, but Cold lifted his hand and caught the smaller man's fist in his palm, then slammed his own fist into his opponent's side. He grabbed the patron by his shirt and turned, throwing him over the bar.
By this point, those who didn't want to fight were already running, except for one toothless old man in the back who was already enjoying his free drink, cheering and advising his new best friends. "Punch 'em in the face!"