One interesting thing Bullfrog says when he talks to Rayman is "You really don't have to sell Eden's propaganda anymore, sir. Especially not to me." Why would he say this? Simple - he's an Assassin. He knows Eden is being run by the Templar Order, and if he ever believed in its propaganda, he was likely disillusioned of it when he joined the Brotherhood.
Bullfrog calls Rayman 'sir' in a semi-mocking manner throughout most of their conversation, but after seeing Rayman genuinely react with horror to the vision shown by the bubble, he calls Rayman "mon ami". He knows Rayman's illusions have been shattered at that point, and no longer just a blind puppet of Eden.
