Prowl

Early Life
Prowl was a police officer in Iacon long before the Great Civil War started. He and his partner, Orion Pax served as officers for a long time before joining the Elite Guard Academy. Orion became an Elite Guard, but Prowl failed the task. This made Prowl go down a dark path as a criminal for two years.

After a while, Prowl ran into Yoketron, the master of the Cyber-Ninjas. Prowl began his training as he met two other students being Deadlock and Jazz.

After some time, Deadlock left to become a bounty hunter and Jazz left to join the Elite Guard. This didn't bother Prowl until Yoketron was attacked and killed by the rogue member, Bludgeon. Prowl blamed Jazz for not being there to help but knew Jazz blamed Prowl.

Great Civil War
Years later, Prowl joined the Autobots to fight the Decepticons. Prowl became a tactical master. He also planned most missions made inside of Iacon. During this time, Prowl met Orion again who was now Optimus. In doing so, Prowl also met Bluestreak and Smokescreen. The three became good friends, even seen as brothers.

At the end of the war on Cybertron, Prowl served with Optimus Prime and left Cybertron on the Ark with the Autobot leader.