Of all the things to be right about, an ambush definitely wasn't the best. Zangetsu has been doing his level best to chip away at the ice (with varying levels of success, despite his and Nosh's efforts) when Frost appears and zooms on by.

Zangetsu tears off after him, sliding to a stop at the edge of the arena.

"OI!! FROST IS HERE!"

He only barely manages to get the words out before Frost announces himself anyway.

Cheeky little fucker.