Warning: Some of the following could be considered story spoilers, and it might make you think less of a celebrated athlete.
So, Seahawks running back and foremost proponent of Beast Mode, Marshawn Lynch, is playing a character in Call of Duty: Black Ops 3. ESPN ran a story about the process of mo-capping the sports star, which revealed him to be both fascinated by the process, and to have quite a poor grasp of CoD multiplayer tactics for a man who claims to have played daily since college ("I'm shooting the shit out of shit!").
More interesting, however, were the little story details Marshawn and ESPN let slip during the process. The mo-cap scene was set in Singapore - Lynch plays a villain, part of a group of elite mercenaries protecting an underworld boss that the game's heroes meet in a bar.
Then things go nasty. As ESPN puts it: "Lynch will lead his fellow guns-for-hire -- played by veteran mo-cap performers Jeremy Dunn and Ben Jenkins- -- to a table for booze and banter. The bosses will enter. A melee will erupt. They'll shoot up the tavern and flee to the streets of Singapore."
It's not clear if the mercenaries are also augmented humans, or if Lynch will make more than a cameo appearance - given that he appears to have filmed a single scene, it would appear that these are one-level enemies.