No specific voice needed for this role. Cain is a Spartan on the Spartan II program. He is a douchebag and frequently bullies Jenna for not committing to the program. He believes the program should not dare be questioned and that everyone should be grateful for the opportunity. He survives augmentation, but is ultimately murdered by Jenna while in cryosleep. You will need to read 22 lines for this role.