Covering Air, Land, Underground and the Ocean.
The Rhino- Is Ray Stone a former police officer, escorting a prisoner to a "special prison"
In front is an Electric Eel- named Wyatt Watt a former teacher with a PHd in psych and hired to prove the escorted prisoners innocence (also the leader of this motley crew)
On the Right is a Meerkat- named Alex Payne former hollywood pyrotechnic and explosive expert, framed and sent to prison on the account of murder.
The Flying one is a Peregrine Falcon named Eddie Peregrine - A Hired pilot to fly these three passengers to the "special prison" Also an old elementary friend of Alex Payne. Both having not seen each other over many years.