From those options, obviously Morgan Freeman. But he has to narrate absolutely everything like its March of the Penguins. "The Guardian found a Legendary Engram on the corpse of Taniks. We boarded the ship and flew back to the Tower to pay a visit to Master Rahool. Upon landing, we made him our first stop. The Guardian was disappointed when the Engram turned out to be a Rare Hand Cannon. Then, there was an uncomfortable silence. The Guardian picked up Rahool and threw him off the Tower. Many mistakes were made on this day."