From Sonic Retro
Rhino Jet, リノジェット, is a GUN robot that appears in some of the stages of Sonic Adventure 2 and is part of the Rhino series. It's the most basic of the series of all, and from where all the other models are designed and modified from. It usually patrols an area, but it will rev up and ram once it spots a character. It awards 100 points when destroyed.
|Normal mode||Hard mode|
|Eggman||Sand Ocean, Lost Colony|
|Sonic Adventure 2|