Chop-Chop is a Badnik in the game Sonic the Hedgehog 2.
Sonic the Hedgehog 2
Chop-Chop drift aimlessly in the waters of the Aquatic Ruin Zone. Once they spot Sonic or Tails they jet off at high speeds and charge in the players direction with their jaws mashing. These robots can also catch the player unawares by charging backwards too. With water physics slowing down movement as it is, their fairly fast charge can be hard to avoid, it's best to avoid the waters altogether.
Sonic the Hedgehog 4: Episode II
Chop-Chop also appears in Sonic 4: Episode II. It looks simlar to the one in Sonic 2, though it has a smoother appearance and its eyes are open.
Adventures of Sonic the Hedgehog
A small number of Chop-Chops appear in the pilot episode of Adventures of Sonic the Hedgehog. The Chop-Chops, some Mashers and an Octus that chase Sonic as he tries to stop Doctor Robotnik's attempts to drain a lake. The Mashers, Chop-Chops and Octus are all defeated when they become entangled in seaweed that whips up behind Sonic as he swims past at high speed.
This footage is reused in the episode "Untouchable Sonic", on a TV being watched by Scratch and Grounder.
Trivia
- The Mega Chopper from Sonic the Hedgehog 3 is similar to Chop-Chop, but smaller.