Protectobot

Protectobots are a subspecies of rescue vehicle-themed Cybertronians from the planet Cybertron.

Biology
While also being a subgroup of Autobots, Protectobots consider themselves a species unto themselves.

Anatomy
Protectobots have similar biology to other Cybertronians, except that they transform into emergency, rescue and law enforcement vehicles such as fire engines, police cars, rescue helicopters, police motorcycles, and ambulances.

Powers and abilities
Protectobots share many of the same abilities as other Cybertronians.

Select Protectobots can combine to form a combiner known as Defensor.

Culture and society
Protectobots are dedicated to the protection of humans and their homes. To this end, they will respond to any manner of mundane human emergency and help in any way they can.

Protectobots are generally considered to be the mortal enemies of the Combaticons.