From Sonic Retro
Jawz, or Jawzun (ジョーズン) in Japan, is a shark-shaped badnik from Sonic the Hedgehog 3 found in Hydrocity Zone. These blue badniks are unexpected and act just like torpedoes; they are fast and they launch in one direction. If the player is hit by this robot, the animal trapped inside is killed. They can be easily destroyed by jumping.