Griffin is a member of the Assassin Brotherhood active during the 21th century.
In 2016, after the Brotherhood discovered that Monroe, a former employee of Abstergo on the run, had come out of hiding, Griffin was sent to investigate. Discovering that Monroe recruited a group of teenagers who discovered clues leading to a Piece of Eden while using a stolen Animus, the Assassin tried to learn what they knew and to prevent the Templars from reaching them first. Later, as an agent of Abstergo accosted Owen on the street, Griffin intervened, neutralizing him but the young teen managed to flee with the help of Monroe.
Griffin's action didn't prevent the Templars from eventually finding the warehouse where the teenagers were reliving the memories of their ancestors and they sent a strike team which captured four of them. However, the last two, Owen and Javier, escaped thanks to the Bleeding Effect and Griffin found them back thanks to the tracking device in their stolen Abstergo bike. Griffin convinced Owen to trust him, and the teenager in turn convinced his reluctant friend to work with the Assassins. The teenagers revealed that during their time in the Animus, they discovered that a Dagger of Eden was gifted to Ulysses S. Grant who kept it until his death in his family cottage. After Griffin prompted them to use Eagle Vision to see if he was truly trustworthy and after he promised to secure the Brotherhood's help in order to prove that Owen's father was innocent of the crime he was arrested for, he brought them to his safe house.
After equiping themselves and receiving a call from Gavin Banks, who revealed that the Dagger was in fact a prong of the Trident of Eden, they took a private plane to New York and from there drove to Grant's house. However, Monroe arrived there first and left with the artifact before, the stash being empty. Before they left, three helicopters filled with Templar agents arrived to the house and after Owen destroyed two of them with a grenade they escaped.
- A trained warrior and freerunner, Griffin had dark complexion and was at least a third generation member of the Brotherhood.