He is voiced by Yasuhiro Mamiya in the original Japanese version and by Michael McConnohie in the English dub.
Crank Zent was one of the Mobile Suit pilots who were part of the force, alongside Orlis Stenja and Ein Dalton, sent out by Major Coral Conrad to attack the Chryse Guard Security base and kill Kudelia Aina Bernstein in order to further stir up tensions between Earth and Mars.
After the Gjallarhorn forces were beaten by Mikazuki Augus in the Gundam Barbatos and Orlis was killed, Crank Zent returned to base and was reprimanded by Coral for his failure to kill Kudelia, which had cost him funding from Nobliss. To redeem his honor, Crank went out to go and try to capture Kudelia again, though chose to go by himself and not bring any men with him.
Arriving at CGS's base, Crank raised a flag to signal he wanted to duel Barbatos, stated that if he won then the CGS would have to turn Kudelia over. Mikazuki Augus went out in the Gundam Barbatos to fight Crank in his EB-06 Graze. Crank was once again beaten by Mikazuki, who asked Crank what he would get now that he had beaten him. Crank admitted he had not thought of that and requested that Mikazuki kill him in battle so he wouldn't return home and his men wouldn't be punished for his failure. Mikazuki granted Crank's request and shot him, allowing his men to avoid punishment.