 Otherwise, Clank sits on Ratchet's back (in a backpack-style fashion) and is used to provide useful jumping, hovering and diving abilities through various upgrades.These upgrades are given over the course of the first game, but Clank retains them through the later ones.Throughout the series, the duo often encounter Captain Qwark, an ego-driven, false, green-costumed superhero that may help or hinder Ratchet and Clank's goals in some way.