Background
An Experimental Droid unit created by the Separatists during the later years of the Clone Wars, the EX/BX-Series Pilot Droid was a hybrid unit of a BX-Series Commando Droid and a OOM-Series Pilot Droid
Due to they're experimental nature, they were only produced in a limited amount
EX-1M Is one of the few units gunned down in battle who was later reactivated, due to age in his processors, he is now a free thinking droid. That being said, he feels obligated to help tear down the Galactic Empire, the former Galactic Republic
Motivation
Defeat the Galactic Empire, as it was once the Galactic Republic and is far more tyrannical