THIS ARTICLE IS SMALLER THAN A NANITE
|If this is your page, you can help Generator Rex Fan Fiction by expanding it.|
The Big Fat Sword (also known as the B.F.S.) is a massive orange sword that Rex can change either arm into.
Rex is also capable of transforming the blade of the B.F.S. into the Battle Saw, a giant buzz saw that can slice through almost anything. He used it several times to slice tentacles off from huge E.V.O.s.