10 Best "Everything You Know Is A Lie" Moments In Star Wars

In order to bring down a ruthless Galactic Empire hellbent on ruling and oppressing the galaxy, you likely need a few inside men and women to help turn the tide in your favour.

And luckily for the Rebels and Ghost Crew, that's precisely what they had in the form of a secret spy by the name of Fulcrum.

This moniker had actually been used by a number of undercover figures who helped the Rebel Alliance by providing them with valuable intel. But the unexpected reveal of Ahsoka Tano being the first figure behind the moniker paled in comparison to the revelation of a one-time Imperial Security Bureau Agent being the latest person sporting the codename on Rebels.

After becoming disillusioned by The Empire on the back of being stranded on a moon with the Rebels' Zeb Orrelios, Alexsandr Kallus secretly decides to begin aiding their cause from within.

Due to his regular battles with the likes of Kanan Jarrus, Ezra Bridger and the gang, though, it's safe to say that some of Ghost Crew weren't quick to believe their long-time enemy had actually been helping them for quite some time.

But it was the truth as Kallus had routinely secretly supported the Rebels with his vital transmissions ever since that spell on a moon with Zeb, and continued to do so after realising the Empire didn't actually care about him in the slightest.