( Pyra is shown fighting Sephiroth on Final Destination with Rex watching nearby Pyra and Sephiroth briefly clash before Pyra gets knocked back she then turns into Mythra and continues fighting Sephiroth only to be knocked back again Rex becomes worried and thinks for a moment he then becomes determined and runs over to Mythra )
Mythra: Rex what are you doing?
Rex: Mythra I have decided that you're going to need my help.
( Rex takes out his sword )
Rex: I have decided to join the fight.
( The splash screen appears )
REX DRIVES INTO BATTLE
( Gameplay of Rex is shown in the game with the trailer ending with Rex knocking out Sephiroth Mythra turns back into Pyra and the two strike a pose together )