"Just one," said Robin, as he prepared for a running jump. "Dibs on the big guy with the knife."
With that, he was over the side in a very theatrical manner. It was more dangerous and completely needless in a situation where they were vastly outnumbered, at least fifty-to-two (which is to say, the gangsters were outnumbered by the two Robins), but he had a thing about showing off, specifically the need to do it at all times.
He landed heavily on the biggest guy there, landing heavily enough to knock him down. Then he added a kick for good measure. "One!" he shouted, then he turned to the next guy. "Care to go for two?"