 The separation does not significantly weaken either unit, making the Rev-9 one of the most formidable Terminator models yet seen (Its ability to take punishment is slightly lessened when the two are separate, but this only means that it is easier to throw the Rev-9 back or slow it down rather than actually destroying it).Its poly-alloy and endoskeleton can separate and fuse back together at a rapid pace, enabling it to split or merge during combat without ceasing its movements.Director Tim Miller commented on this upgrade, telling CinemaCon attendees, "Our cool new feature... is he can split.