From Sonic Retro
Rhino Spike, リノスパイク, is a GUN robot that appears in some of the stages of Sonic Adventure 2 and is part of the Rhino series. It's a Rhino Jet with spikes on top. It usually patrols an area, but it will rev up and ram once it spots a character. They can only be destroyed by a somersault for Sonic and Shadow, but a simple punch or kick will do for Knuckles and Rouge respectively. It awards 100 points when destroyed.
|Normal mode||Hard mode|
|Knuckles||Aquatic Mine||Wild Canyon, Aquatic Mine|
|Sonic Adventure 2|