The Rhino series is a line of small robot tanks built and deployed by G.U.N.. They appear in Sonic Adventure 2 and have a simplistic, blocky shape. All the different Rhino types are listed below.
- Jet - The standard Rhino unit. The jet boosters on its back propel it toward enemies to ram them.
- Cannon - This Rhino unit sports a cannon that fires explosive shells.
- Metal - A cuboid Rhino fully reinforced with armour plating. It cannot be damaged, but it can be used as a platform so long as it doesn't run you over first.
- Spike - This last Rhino model's top is covered in spikes. Sonic can only destroy these units by spin-dashing or sliding into them.