Following Samuel's lead, Rook released his own Albion, and Kujaku. (which he totally didn't take off of Luzy's corpse). Being unsure of the surrounding area, he didn't feel comfortable having Ifrit out. It would be better to have fliers that could handle any situation. 

Without missing a step, Rook fell in a few feet behind Samuel, allowing him to lead the way into the fog with Albion overhead of him and Kujaku slightly to his right.

"This should be interesting." He thought to himself.

"Do you know where we are going Samuel?" He asked while following.